For gasolene, for an old sports car.
The car is unusual enough that a new tank is not an option, plus I'd like to have a bigger one, and have interior baffles (original is just a box). The original is made from sheet steel.
I was thinking aluminium, but then thought that that might crack; stainless, but then I had to pay huge$ for the stainless liner for our chimney (can 30 feet of 6" pipe really cost over $1000?); plain steel, but it might rust...
Opinions?