I need a fuel tank for an SS16 I have--it came without one... I'm not trying to steal this sale from you, but what did you use for your homebuilt???
Smitty, I tried my best to find a decent used tank at a reasonable price on ebay but all that I found cost at least $50 or more and most of them needed additional cleaning or some kind of repair. Couldn't see spending that much money on a used tank and possibly end up with something that couldn't be repaired or that needed constant repair.
For my homebuilt, I used 1/16" thick diamond plate sheet aluminum only because that's what I had available. Regular 1/16" aluminum sheet would probably work better. I cut out the pieces, bent where needed with a sheet metal brake, and then put it all together with aluminum pop rivets and "alumiweld" that I bought at Harbor Freight. Using "alumiweld" you can sorta weld aluminum with a map gas torch but it's tricky and takes a good bit of practice. For the gas line connection, I drilled and tapped some 1/4" thick aluminum bar and "alumiwelded" to the bottom of the tank. After assembly, I had to go back over some of the seams again to fix some small leaks. I got most of the leaks fixed but I finally had to use some epoxy gas tank repair for one of them. I've been using the tank now for about a year without any problems. If there are any more leaks I haven't found them. I've got a few pictures I took during the process if you're interested.