Pete Aronson, of http://www.hyper-formance.com/, who lives just down the road from me, has a lot of NOS and reproduction parts for the ORIGINAL bikes, but they are not cheap, and the one part you cannot get at any price, is the 5 speed stick shift. They are not legal to sell any more. People pay huge amounts of money for these things, even in poor condition. If you had one, someone with a CNC mill might be able to duplicate it for you.