Zorro: Why did you go with the cl 450 with a 750 motor? It looks like you're making a bobber out of it? As for years and models, how compatible are the parts? How easily/difficult are parts to obtain? Thanks for the info. Instead of PMing each other someone else may be able to school us both:D But anyways the CL had that motor in it when i got it. Got it in a Craigslist trade. Also got another motor parts bike and other random parts. The look im going for is the Bobber/Rat look. As far as compatablility of the parts im not to sure. Parts seem to be easy to obtain. There are plenty of parts bikes out there. I do know that the mechanical voltage regulators and rectifiers are obsolete. You can only by a used 35 yr old parts or switch to newer electronic ones from a newer bike. And if you cant find what you looking for just wing it. The taillights im using are actually beehive marker lights. With about 3 buck in electronic components you can turn a single filament bulb into a running/stop lamp. I may do a write up on it and put it into the How-to section. Like i said before just dive right in, learn as you go and have fun with it!