I put one of Carter's tanks in my '41 and everything fit correctly and it looked almost exactly like the original tank which was needing some attention. The only thing different was the tray the tank sits in on my early '41 had only one hole, as did the tank, and the new tank had two. So I took my hole saw and made the cooresponding hole on the other side. Gives me a drain plug as well as the regular shut off. I am pleased with the tank. The filler neck lined up with the hole well.