[John22j]

I was thinking of doing something similar to my bike -- but I found I can ride over 2 1/2 hours on the small tank that came with it so I passed on the idea.... mainly because of the mounting issues you're facing.

Looks like it will be nice when you're done though.... I like the semi-transparent tanks - easy to see when you're running low... even if they turn yellow you can still see the fuel inside.