Rock Valley

On a semi-related note, does anyone have a resource for the LARGE o-rings used to seal some of these pumps? I've got a 2000 Z-28 pump with integral swirl pot that I want to use in my A-body tank, and I need a thicker o-ring to seal the pump to the tank. The 2000 Z-28's used a plastic tank and the lock ring setup can't be swapped in to anything else. I pirated the top of a different GM tank to do something similar to what gdemon did, but the pump fits a little loose in the new top. I kinda don't like a little loose anything in the fuel system, so info or leads to the proper o-rings would be greatly appreciated... I'm sure the same setup could be used on the C-barge tank, with a little fab work.

Clair