'64 C-20 rear end swap info

[polarisman340]

Hello all. Newbie here. I just picked up a '64 C-20 2wd fleetside lwb project. I've read through the wealth of info on the front disc brake swap options, and I'm planning on a complete crossmember swap with all related components from a '78 C-10 5 lug. Now for the rear. I read in here that the '71 C-10 is a 5 lug coil rear. I've got the 8 lug full floater coil rear. Is that '71 rear end a direct bolt in? I'm aware that the '71 rear is a bit wider, but I'm not worried about that. Just concerned as to whether or not all the mounts are in the same location, '64 axle to '71 axle. Any info is greatly appreciated!!!!!

P.S. Thanks to all that have contributed info here. I don't think I would have picked up this truck if I didn't have all this info available on swaps, setups, builds, parts, etc....
You guys rock!!!!