diff --git a/src/constants/endpoints.js b/src/constants/endpoints.js
index 43abf149c..0c75258e9 100644
--- a/src/constants/endpoints.js
+++ b/src/constants/endpoints.js
@@ -130,7 +130,7 @@ const endpoints = {
     },
     PriceOrderItems: {
         url: "/price/api/v1/price/order-items",
-        method: "GET",
+        method: "POST",
     },
     ValidatePromo: {
         url: "/price/api/v1/price/order-promo",
diff --git a/src/fmg-components/cart/cart.vue b/src/fmg-components/cart/cart.vue
index e841d8849..90c1adf98 100644
--- a/src/fmg-components/cart/cart.vue
+++ b/src/fmg-components/cart/cart.vue
@@ -1008,15 +1008,15 @@ export default {
         salesTax() {
             if (!this.lineItems || this.lineItems.length < 1) return;
             return this.isInsurance || !this.shouldHideRecalibration
-                ? baseMixin.methods.getSubTotal(this.lineItems) // calculate with recal (if on order)
-                : baseMixin.methods.getSubTotal(this.lineItemsWithoutRecal); // calculated without recal
+                ? baseMixin.methods.getSalesTax(this.lineItems) // calculate with recal (if on order)
+                : baseMixin.methods.getSalesTax(this.lineItemsWithoutRecal); // calculated without recal
         },
         amountDue() {
             if (!this.lineItems || this.lineItems.length < 1) return;
             if (this.showAsPaid) return 0;
             return this.isInsurance || !this.shouldHideRecalibration
-                ? baseMixin.methods.getSubTotal(this.lineItems) // calculate with recal (if on order)
-                : baseMixin.methods.getSubTotal(this.lineItemsWithoutRecal); // calculated without recal
+                ? baseMixin.methods.getAmountDue(this.lineItems) // calculate with recal (if on order)
+                : baseMixin.methods.getAmountDue(this.lineItemsWithoutRecal); // calculated without recal
         },
         amountPaid() {
             if (!this.showAsPaid) {
diff --git a/src/layouts/payment-method/payment-method.vue b/src/layouts/payment-method/payment-method.vue
index 85fb84a63..ff7e6a8d8 100644
--- a/src/layouts/payment-method/payment-method.vue
+++ b/src/layouts/payment-method/payment-method.vue
@@ -666,7 +666,7 @@ export default {
                     return true;
                 }
             } else {
-                if (this.isPiaEnabled && this.totalAmountDue > 0 && !this.isRecalibrationOnOrder) {
+                if (this.isPiaEnabled && this.totalAmountDue > 0 && !this.shouldHideRecalibration) {
                     return true;
                 }
             }
diff --git a/src/store/index.js b/src/store/index.js
index 5c04398ac..130f1e7c1 100644
--- a/src/store/index.js
+++ b/src/store/index.js
@@ -2413,14 +2413,6 @@ export const actions = {
         context,
         { payload: { availableLineItems, serviceZipCode, serviceZipCodeCtu }, pageNameToLog }
     ) {
-        const zipCodeToUse = serviceZipCode
-            ? serviceZipCode
-            : context.getters.order.serviceLocation.zipCode;
-
-        const ctuToUse = serviceZipCodeCtu
-            ? serviceZipCodeCtu
-            : context.getters.order.serviceLocation.zipCodeCtu;
-
         const flattenedLineItemsWithChildParts =
             getFlattenedArrayOfLineItemsWithChildParts(availableLineItems);
 
@@ -2428,34 +2420,39 @@ export const actions = {
             partNumber: lineItem.partNumber,
         }));
 
-        const availableLineItemsFormattedForRequest =
-            buildQueryStringParameterFromArrayOfComplexObjects(
-                lineItemsWithOnlyPartNumbers,
-                "lineItems"
-            );
-
-        const vehicle = context.getters.order.vehicle;
-
-        // TODO: Insurance pricing...`ParentAccountNumber=${context.getters.order.payment.parentAccountNumber}`
-        let queryString =
-            `ParentAccountNumber=${context.getters.order.payment.parentAccountNumber}` +
-            `&CTU=${ctuToUse}` +
-            `&CarId=${vehicle.carId}` +
-            `&Make=${vehicle.make}` +
-            `&Model=${vehicle.model}` +
-            `&Year=${vehicle.year}` +
-            `&EON=${context.getters.order.eon}` +
-            `&ZipCode=${zipCodeToUse}` +
-            `&${availableLineItemsFormattedForRequest}`;
-
-        const lineItemServerData = context.getters.order.lineItems.serverData;
-        if (lineItemServerData) {
-            queryString += `&ServerData=${encodeURIComponent(lineItemServerData)}`;
+        const order = context.getters.order;
+        
+        var providerNumber = order.serviceLocation?.provider?.providerNumber ?? order.serviceLocation?.zipCodeCtu;
+        if (providerNumber.startsWith("00") && providerNumber.length > 5) {
+            providerNumber = providerNumber.substring(1);
         }
 
         const response = await globalMethods.callHttpClient({
             method: endpoints.PriceOrderItems.method,
-            endpoint: `${endpoints.PriceOrderItems.url}?${queryString}`,
+            endpoint: endpoints.PriceOrderItems.url,
+            payload: {
+                parentAccountNumber: order.payment?.parentAccountNumber,
+                billToAccountNumber:
+                    order.payment?.billToAccountNumber ??
+                    applicationConfig.CASH_DEFAULT_BILL_TO_ACCOUNT_NUMBER,
+                providerNumber: providerNumber,
+                carId: order.vehicle.carId,
+                year: order.vehicle.year,
+                make: order.vehicle.make,
+                model: order.vehicle.model,
+                eon: order.eon,
+                state: order.serviceLocation?.state,
+                referralNumber: order.referralNumber,
+                referralSequenceNumber: order.referralSequenceNumber,
+                zipCode: order.serviceLocation?.zipCode,
+                serviceZipCode: serviceZipCode ?? order.serviceLocation?.zipCode,
+                referralDate: order.referralDate,
+                isReplacement: !order.damage.isRepair,
+                deductible: order.policy?.currentDeductible,
+                coverageStatus: order.payment?.insuranceCoverage?.coverageStatus,
+                lineItems: lineItemsWithOnlyPartNumbers,
+                serverData: order.lineItems.serverData ? order.lineItems.serverData : "",
+            },
             logApiCall: true,
             pageNameToLog: pageNameToLog,
         });