GB got it right on the nose.Bird76Mojo said:Kruk I hope you don't mind me answering him for you. Since I'm around..
He used a stock seat pan and cut the back half of a fuel tank down to fit his needs. I believe he then bolted or riveted it to the stock pan.
Keep in mind that you can still use your stock pan and also use foam and fiberglass to get the desired shape you're looking for as well..