trainyard-
Boston's a tough one. Here are some options-
1) Very old assembled 0300 and 0900 Main Line wooden kit models from the Boston Elevated days come up once in a blue. Great patience required.
2) Was able to pick up a surprisingly good model of the 1951 East Boston Tunnel car made by St. Louis Car Co. years ago. Have no idea who made it. As you probably know, these ran in married pairs so I kit-bashed a St. Petersburg Cleveland rapid kit to match it up.
Again, lots of patience required.
3) For the 01500-series Red Line car, you might want to try kit-bashing an Atlas Comet commuter car. A SEPTA version is now available on ebay.
4) Island Modelworks has produced a very kit of the new 0700 Blue Line cars, so you may want to check that out.
None of these are powered, so there's another layer of complication.
The Car Works produced an excellent model of the Boeing LRV years ago, but they're getting much harder to find. Naturally, the scarcer they get, the more spendy they become.
So although it will take some effort, it's not impossible.
Good Hunting!
