There used to be a cool forum here:
http://www.peaveyT-60.com
The above website is still there, and has lots of great T-60 info, but apparently there was some drama I wasn't privy to, and the forums went bye-bye.
If anyone is interested, especially people from the old forum at peaveyt-60.com, there's a new forum here:
http://www.t60mafia.com
Spread the word. It's a good, close-knit group. Chip Todd, the inventor of the T-60 (and iirc the T-40 bass) posted on the old forum regularly, hopefully he'll arrive at the new place soon as well.