I've got an FJ55, the wagon model before the FJ60/62.
IH8mud is the best vehicle specific forum I've ever used. There are some seriously talented DIYers over there.
FJ62 has the 3FE fuel injected straight-6 engine which was also used in early FJ80's (1990-about 1993). All came with an automatic transmission and 4.11 gears in the axles. FJ60's came with ~3.79's, so the 62 axles are desirable amongst rock crawlers. Axle parts and brake parts should be pretty much interchangeable between FJ40's, FJ55's, FJ60's and FJ62's depending on the year. I think the 60/62's all had A/C standard from the factory.
Watch out for rust! Rear quarter panels, all fenders, and rocker panels. The good news, is that there are some pretty sweet ideas for removing rusty panels to turn them into Body Armor over on Ih8mud, so check those out if it's a real rust bucket.
Also, beware of smog equipment. If you live in a non-emission control state, it's no big deal, but they have to pass smog tests in most places. If you see a bunch of loose hoses, missing equipment, etc under the hood, run away.
Be prepared for some of the most fanatical owners on the planet as well. If you want to have a lot of fun, tell another Land Cruiser owner that you think jeeps are cool. Fisticuffs normally ensues.
Good luck, and I can answer any questions you might have after you go look at the thing.