I'm about to embark on my first moto-bike project. I'm shopping around for the perfect bike to use. I'm really into cafe racing so I wanted to model it after a cafe racer. Is there anything I need to know before sinking $500+ into a bitchin' cruiser? The bike I'm looking at using is the Nirve Skulls. I like it because it has the motorcycle looking front fork tubes and a front disc brake. It has an aluminum frame. Is steel preferred over aluminum? Does it matter? Any advice...or warnings to a first time builder are greatly appreciated. Thanks! Oh yeah, one other thing. Anyone out there build their own fuel tank?