86 Silverado Father and Son project

[mcbassin]

Moved from the engine and drivetrain section because this turned into a real project!



I am "helping" my son build a truck to drive. So we purchased a 86 swb that needs an engine. Today we purchased a car with a donor engine 92 Buick roadmaster with a 5.7 tbi engine and I think a 700r4 tranny. The first question can I do a direct swap and use the ecu and harness and keep the throttle body? or would be better off throwing the old carburator and intake off the oem 305? Has anyone done this type of swap? can we use the 700r4? I hope to use the serpentine belt setup and I know we probably need to address the fuel supply to the motor. What about emission crap? Can I just chuck it all in the trash? BTW,The fuel inected motor runs good and I think it would be more economical and reliable than a carb. Suggestions? Thanks,
Mike

Here is the truck:

here is the donor engine: