Hello lads if it helps you Performance Ford have just completed a test involving us ,AH fabrications ,Forge,Pro Alloy and a genuine RS 500 cooler it is being sold at Ford Fair i think you will find the test shows are cooler to be infront in performance figures right across the board giving 0 pressure drop 34 degree running temp and eliminating turbo surge give me a call if i can help with pricing details or alternatively see us at National day