I like the idea of the shelf above the in-cab tank. It wouldn't be much of a problem to fabricate a custom shelf/box to make maximum use of the space. I think I'll put some thought into that project.

1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy