sport10 the 7 ports are on there way but i don't reccomend them unless you race at a large track, the 5 ports put out good top end when piped and geared right. the engine is very similar to the p5x but with a smoother powerband and better fuel economy.

pino the north american distributor for the go tech engine is www.racefactorindustries.com if you have any questions about the engines they will be more than happy to answer them for you. the Italian distributor is www.maugraffix.com if your in europe. you can reach racefactor on the comment page