Hi Brian,
The 1960-62 Chevy trucks had the torsion bar setup up front, with a "X" member in the middle of the frame. The 1963-66 Chevy trucks had coils up front. The only thing a '63 has in common with the 60-62's is it has the same sheet metal.
If you want to drop in a V8 all you'll need is the motor mount brackets oout of a 67-72 Chevy truck, and will have to drill some holes, other than that you should be ready to drop in a V8. Also are you gonna put in a automatic, or keep the manual transmission? Also is it a original "K" series 4x4? Most of the ones around here are on late 70's Gm truck chassis.
David


My truck don't leak oil, it just marks its teritory.