Thought I'd give you guys an update:
I bought the car yesterday: I have some friends that are into demolition derby, and I worked a deal with them -- They tow the car back to their shop, they help me do all the swaps, and they can keep the wagon for either putting into a derby, or for towing their derby cars to the derby.
Either way, it works out great for me: I get shop space, and a gang of 8-10 guys who are going to scramble to help me do the full swap over a weekend. I don't really have any workspace, and I definitely don't have the tools I need, so the whole thing works out great for both of us.
When they (the derby guys) all got together last night to look at it as we brought it in, they were drooling over it. Its just the kind of car they like.
Oh, and I took a really knowledgeable guy with me, and after he looked it over, he said everything the seller was saying seemed pretty straight up, so I'm pretty happy overall.
Covert