Anybody know of a larger aftermarket gas tank that fits on this bike?
It will require some modification and fabrication to work. I'm fitting a Gilera tank right now and the two issues I needed to address are the horizontal tabs for mounting the stock tank (I bent them up against the backbone) and the voltage regulator (which I have to relocate and shave-down the mounting bracket. Both were interferring with the tank's tunnel, not allowing the tank to drop down far enough. That's all sorted now. I only need to media blast the tank and do a little body work before painting.

/Mike