Hi Beau
As you have probably noticed the availability CMP gas tanks is very limited, read that as scarce. Hope you can find good usable tank.
I need two at the moment and am planning to look at making them they really are pretty simple it is the seam welding that is the big deal in getting a leak-less tank. Before I try I'm considering just tanking my sample tank to a local sheet metal fabrication shop and asking them for a price.
One of the hard bits to find is the filler spout but that is not as bad as it looks as it is basically a standard Ford filler spout for the cab mounted fuel tank of the 30-40-50s same bell shape.
Take a look at the dimensions and construction of my sample tank
http://www.mapleleafup.net/forums/sh...ank#post245952
Keep us posted on how your search goes, and if you happen to find a warehouse full of NOS tanks, oh well we can dream.
Cheers Phil