Jared, to quote the "large friendly letters" on the front of the Hitchhikers guide to the Galaxy:
DON'T PANIC!!
I don't think you've bitten off more that you can chew. This is well do-able. I suspect there might be a few bits missing but we can work that out, I've got a fair collection of bits we can raid and as Norm says there is always wrecks coming up on gumbay. At this stage I can't see anything that you need for the frame that I haven't got here. A bit of postage and the problem is solved
I'll digest the photos tonight and we'll work out a plan. I reckon we might start with making sure the drive (transmission) is right and then we'll have a look at the deck and finally the engine.
This process might take a while- a few weeks but at the end you'll have a working example of the best model they ever made and the forum will have a 'how to' thread that may be of value to others in the future.