Re: what did you do to your motor bike today?
didn't see that episode, but i saw discovery's "biker build-off" show where a guy did basically the same thing. it was a work of art.
copper's really easy to work with, semi-inexpensive, and adds a cool look to a vintage bike.
minus the cost of my time (not to mention the time spent figuring it out) a copper tank can be built for about 50 bucks.