1966 230SL
I expect the purist's shall cringe but here is my fabricated fuel can. The original had a good deal rust and was just cosmetically detractive. So I cut the cylindrical portion away from the formed bottom (not rusted), rolled a new piece of sheet metal to fit the salvaged bottom, welded it along the vertical seam and along where it meets the bottom. I then made the cut outs using the old can as a template. (I transferred those by wrapping a piece of paper around the old can and tracing them on the paper, then used that to trace them onto the new can.) Much better and a fraction of the cost for a new replacement can.
Harry