i ve emailed them about the motorcycle conversion in nunya`s post. they are having liability problems,so it looks like you will only be able to purchase the parts,not as a kit.
i just happen to have an extra motorcycle in the garage. its a 1979 Honda CB-750A motorcycle. its just a plain ol` 750 Honda with a twist. it has an 2 speed automatic transmission. i think it would be great to power the trike with one of these.
of course,havent let ruby know about this as of yet