For starters, a new fuel system, You need to be able to handle the high pressure & make-up a return line which the '63 doesn't have. The wiring harness from the truck, probably an oilpan. The computer from the truck. & at least $1000.
Most likely you will need to have motor mounts and tranny mounts fabricated. You may need to have the drive shaft modified. New exhaust system will have to be made. Do you have all of the sensors that this engine's PCM needs, including the O2 sensors?
So i went to pick the engine up. It is actually a 6000 Vortec 6.0L with a 4l85-e tranny. I figured I would take it. I bought them both for 900.00. Any info on putting this on a 63 chevy would be great.