Gauging interest

[Gearhead]

Hi guys I'm a machinest and my buddy lost his license. So I built him a motor to get him out of the way(very high cr(14.5:1)) and we'll it wouldn't turn over on the starter motor. So I made a prototype decompressor for it. It consists of a special valve cover and my other one is a cam. Who would want one of these and how much would you guys be willing to pay? Stock starter turns it faster than a stock 50cc it's a 72cc. I will be making one for the 150 motors when I get time. But here's what I'm thinking a nice aluminum valve cover that bolts on all you have to do is tell me if you have a 69mm or 64mm head although it will come with the parts needed to run on either.
Let me know guys.
Thanks. Oliver