what is the fastest and the best engine for the money? and i want to put roto start on it? wich one can i do that on? i was thinking the picco is it fast and stuff?

Most of the time people buy picco, rossi, etc for the name because its all they hear about. An OS CV-R 12, 15, or 18 will do just fine. There is a company that makes roto starts but I couldnt tell you right off the top of my head.

I posted about the OS engines because they are a little more user friendly and they are also eaiser on your wallet.

i have a rush and im running the oscv.15 and the dynamite .12s and i love them both they both work great. both are about 105$ so not a bad price. also dont get a roto start they are P.O.S IMO