For a finished product being marketed and sold across the country/world, with manufacturing facilities, packaging, distributors, help desks, and product liability insurance, sure; that takes time. This approach would also take say, $20k and turn it into $2k rapidly. No one will get rich making these; if lucky, they may be able to cover their beer costs while they are doing the machining...
But to make a dozen or so and sell them as "XS 650 parts", with no warranty expressed or implied, this should be a lot simpler, if someone had the skills, tools, time and interest to do it. Heck, other than the piston size that I asked about awhile ago, all the info is out there; and no disrespect meant to anyone, but it ain't rocket science. You've both done a superb job in the modeling (Metal) and the first unit (Oddjob).
So I'll go out on a limb and pose the question I think a few are thinking....
Metal - are you still interested in pursuing this? Enquiring minds want to know...
And I think there are at least half a dozen folks serious enough to part with some greenbacks...
Oddjob - how is yours working out? Did you have to alter the clutch pushrod?