Basically, vanagons are for people who don't mind doing a bit of upkeep. They are getting old, you know? As long as you are not expecting a vehicle to give you absolutely 0 problems, they are fun...
The '87 is arguably a better van than the '84 for a number of reasons, the main highlights of which are better go and better stop (bigger engine and improved front brakes).
However, having said that, the 2.1 engine is a bit less reliable, having been known to throw rods (the 1.9 is pretty bullet-proof, except for the coolant thing).
Fortunately for you, you live pretty close Boston Bob Donalds who is arguably the guru of WBX engine building. He'll set you up right if it comes to that.
Also fortunately for you, you can drive a van with leaking coolant for quite a while (just keep topping off...). The oil thing from the top of the head? Cracked breather tower? 1k for a pristine body van sounds like a pretty good deal. Pretty much the main things to go wrong after that would be:
1) engine (about $1900 from B.Bob)
2) possibly tranny (yikes! what's this, he says). Manual trannys have been known to crack sliders, and can run you another grand.
Still, worst case, 4k for a (now) top notch van ain't too shabby

. After that, at *least* another 100k miles of "trouble-free" driving.
Sign on to the vanagon mailing list, too...
Good luck,
-Damon
(i have an '84, and my father in law has an '87...
