I bought a used noss head with 22cc domes. One is beaten up and needs replacing. I would like to ask what cc dome would you guys suggest for my combination. Its a stock trued and welded crank. stage 3 ported stock cylinder and 65 mm cast pistons. Going to run FMF fattys, either rejetted stock carbs or a 2-1 35mm pwk. I have a timing advance bracket, probably start with 4 degrees. I will be using it for intense trail riding. I like to ride hard and keep the rpm's high. Our sea level is 600 ft. I am looking to run pump gas, being 93 octane when its available. Sometimes in very rural areas you get stuck with either 87 or 91 if your lucky with no ethanol. My only other option is to use a octane booster but I don't know if there is anything on the market that actually works.
I appreciate the info.