Hey, no kidding - I work up in Greenfield. I know what you mean about rot - it doesn't usually affect the 7s, but 240s rust nearly as well as Germans and domestics do (not as badly as older Japanese cars, though). My parts car's also an '89 and has a shoebox-sized hole in the left buttcheek and paper-thin rockers; my driver's got a few surface rust spots... I mainly bought the wagon so that I wouldn't have to subject the 244 to another unprotected winter (I *need* to wash the underside of the 2 and POR-15 anything sketchy, either now or in April).
I take it you keep an eye on Craigslist? There was a decent-looking '89 244GL (that'd been sitting a bit, but was claimed to have very little rust) in Keene for $450 obo last week; it needed a few parts, but my parts car is almost complete. A neighbour of mine is selling his '89 244, too - nearly identical to mine; he wants to trade it in. If I see him I could try to talk him into selling it.