I'll be glad to get started on it as soon as you get me the parts from a G.
in advance!
Where's the challenge in that for you? Tell you what, buddy, you run down all the parts, work out the details, do whatever machining you need, test it all, then I'll pay you for parts and a bit of labor (don't want to insult you by overpaying for the labor), and I'll even pay the shipping to ship it to me.
You can't beat a deal like that with a stick!