thanks!  i was also wondering if there are any currently manufactured tanks that would work?  should i not be able to locate the exact replacement...like the current accutronics type 4, type 8, type 9 tanks you can get on ebay?

hey everyone new to these forums, looking for some tips.  i found a gibson g105 2x12 at a local pawn shop thats in great condition and sounds fantastic, but its missing the reverb tank.  the RCA hookups are just dangling, i touched them, they buzzed, they seem to be working ok.  i was wondering if anyone could tell me what sort of spring reverb tank would work, wondering if its worth picking up....i need a decent solid state amp to replace my wonderful but road weary music man 4x10...i found the schematic, but i'm not very tech savvy and it didnt give me much insight into how easy/difficult putting a new tank would be, or what sort i would need, or if thats even a good idea.  ive attached the schematic.  any and all responses would be appreciated!