its a waste of time and money, you need to rewire the car for it to use the CAN bus because the engine is not OBD2. also that engine puts out A LOT of heat, factory GXP's come with 6* of KR or more from the factory, not to mention 210* IAT's and over 250* coolant and trans temps after a few WOT runs. a 3800 with a blower is cheaper and faster than a 5.3, you want an LS buy an F-Body