any 3/4 ton pumpkin from a 1950 up into the late 60,s will bolt into your housing. gear ratios from 370 to 538 are used. The 60 thru 62 trucks had a wider boxed frame than the 63 and newer trucks. and had a torsion bar front suspension. You best option would be to find a 63 thru 66 frame to install your body on. A GMC frame would work and has rear leaf springs instead. of trailing arms and coil springs..
