Jack, you could go with an in-line vent, and it could then be installed just about anywhere you could run the line that vented outside of the vehicle. Mine's got a little buna flapper in it, so I don't know how it would hold up to alcohol, but I just bulkheaded it to the floor of the trunk of the Midget.
I'm redoing my tank for EFI - if you want my old one, drop me a PM with your address, and it's yours.