so i recently bought a 2007 300ex for a solid 100, the previous owner had bought it and took it apart and didnt want it, ive had the police run he vin its a clean quad, well i come to find out its blown up, i need a head, piston, and a valve, can anybody let me know what all changes need to be done to go from the stock 8.9.1 piston to a 11.1 wiseco piston please and thank you, and how dod you get into reverse, its all the way down to 1st, hold clutch and turn the **** right

 

Welcome to the forums.

100 bucks, you can still come out ahead with the new motor.