..Piston, rods, gearing, rings, block guard.. Sleves are good, but they also raise your compression...Upgrade your fuel, that includes Pump, since the F-max comes with two piggie injector, get a high flow fuel rail and pressure regulator. F-max should also come with the MSD BTM, or the Gasket.. If you got the Gasket, then i sugest getting the MSD BTM.. WIth the Injetor if you don't want to use the Fmax one provide.. try the Eclipse one, they are 450cc, and can be bought on ebay for like 100+ for all four. You can do head work, but you risk it. Much easier to blow, and not as reliable. Also want to look at a clutch kit if you have a 5spd. ACT Stage2, with Lighten fly wheel option. Quafe also makes a LSD if you decided to go that way. Good luck and ask more specific if need.
Tony