Thanks for the info. Looks like a Vanguard and Comet CVT is far cheaper than a Harley engine and gearbox.
I had considered buying a used chopper rolling chasis from somebody that couldn't or didn't want to finish it. It looks like I could add a Vanguard/Comet drive train for well under $1500. The Vanguard should be adequate for non-freeway, surface street riding.