this engine is a 5.7 vortec came out of an 02 box van i think it was the express so am i understanding this correctly that i dont need the adapter for the 700r4. and could i possibly use a turbo 350 or a turbo 400.. i dont know much about this just want to get a trans that will work with this engine that will not have a computer it has been rebuilt fuel injection gone 4 barrel intake installed.Thanks guys!

John