RE: .049 on a Spirit
Scot,
You should save it or sell it to make your next car payment. Cox only made 1,000 of them. They are the hottest reed valve engine Cox made. In stock form they would turn 20,000 plus. They are a racing engine and lugging it down with a big prop is killing it. Switch that sucker out with a Black Widow. Even a Black Widow can turn a APC 6x3 at 16,500. As long as the Venom still has it's factory cylinder,piston and crank it's worth $100 easy.
Later,
Tim