But my real question is i want to keep the 4l60e that i have in the truck now that was originally behind the 4.3L. since it was replaced not to long before the 4.3 went out. and i was wondering how i could make this work. i know the transmissions changed after 94 and i might need the flexplate spacer im mostly worried about the wiring can i hook it up to the harness i bought? If not can i modify it to make it work or do i have to buy different transmission? I don't have enough money to buy a stand alone computer and that wouldn't make sense since they are sooo expensive i could buy a 99 4l60e for the same price. Any help would be greatly appreciated. thanks.