I have a 99 shee with FMF fatty golds board at about 50 over not shure on compression yet son put back together yet and snorkel off, billet h2o, uni air filter, and boison reeds. I would like to get V force reeds and cool heads (not shure what domes to use). Do I need to advance my timeing or run better than 93 octane or is stock timeing and 93 ok.