Thanks '3D

Reading those instructions was a once in a lifetime experience. first time i ever was mad and laughing my ass off at the same time!

Velocity,
I suspect you will like the 30 with 50 engine. I don't think over speeding the head is going to be much of a problem. i have heard the 50 peaks at a lower RPM and they use 8.5 gears on the 50 to get higher head speed a tthe lower engine RPM. give it a try. Best of luck!