just got an 1980 k10 in decent shape, wanting to make a nice farm truck out of it. wondering if a 6bt cummins or a built 350 would be best...it has 14 bolt 3/4 ton axles and a 3 speed with granny low. i'm going to replace just about the entire inside and the entire outside along with powder coating the flatbed bumper and brush guard and possibly the frame...any ideas would be great. also a good place to find 33 10.5 16.5 and 33 12.5 16.5 would be great too.

any other suggestions on what i can do to the truck would be greatly appreciated, just remember its a budget farm truck that will have decent power and torque and look good going down the road not a 30k dollar restore