I have two reverb tanks you can choose from if you are interested (and if they are the same model number). One is the stock 9BB2A1B and the other is a brand new 4BB1A1B. I just received the new one yesterday. I was hoping I would like the reverb better from a different type of tank, but I just don't like spring reverb for some reason. I'll let you have the new one for $35 shipped. I paid $45 for it and haven't even installed it in my F30 yet. I just plugged it up and layed it behind the combo to hear how it sounds...
If your part number is different than the F30's or you want a different tank altogether then you can go to http://stores.ebay.com/SEPI-GROUP (accutronics' own eBay store) and order one from there. Just be sure to goto accutronicsreverb.com and learn what the part number means and have a part number for the tank's specs you need ready when you place the order!
Good luck and let me know if you want one of my tanks...
Adam