the only reason i said this is because if you want to run a 4l60e to say fuel injection and keep the factory computer to control the transmission. with the 60e behind a carb you need a 600$ controller and then you need a tps to make it work properly. and guys running the controllers say they dont work completely right. i decided to beef up the 700 and run that because there is no controller or anything but a cable needed to control the transmission