ok here is the deal for all thoes like me who want to know there is nothing different between the LQ9 and LQ4 motor the only differance is the computer or the vin# for t he computer it is just the prigraming like timing and so forth. i hade one of my friends at Motor City bakersfield who is nown at the creat king he compared every part of t he 2 motors to the part numbers and found no differance