Guys I'm.about to.get a cool head and was wondering what dome size to get. My mods are fmf fattys, +4 timing, chariot reeds, 28mm pwks with pods. My elevation is 2000-2500 but I also go to Gordon's well a few times a year which is close to sea level. Oh and 91 octane gas with castor 927 mix 32:1.