Well, I am glad to say I now own a '71 SHORTBED Chevy Cheyenne!!!
Friday, Mike and Matt came over to spend the afternoon pulling out the engine and tranny. Thanks for all your help guys!
Over the last three days we've had over a two feet of snow, most of it falling over Christmas night. That made it a lot more difficult to get the new frame out from back behind my house. But with some help, we managed to change the thing out. Saturday, I bolted in the suspention, everything is bolted up except for the steering box. I needed to trim the bracket for the core support. I also had to notch the frame to make the motor mounts work, I think these motor mounts are out of a '73 and up.
I will definitely say that winter has slowed things down. I tried to clean my engine, but my hose was frozen, I had to use a bucket of hot water instead.

Oh well, I'll just have to work on other stuff.
I also ran the numbers off my engine, it's a '77 350 four-bolt main, with 1.94 or 2.02 valves. I'm going to reinstall the V-8 since gas is so cheep for now, it will make it a lot more noise.