mods?

any one know of what mods are avaliable for the j30? besides the obvious air filter intake and the chip? (the chip is too expensive, and the resister (i did it..) only gains about 4-5 hp. i want cold air intake and don't know what else is avaliable (i heard a body kit too, but i don't think that that's too valid of a rumor. What other mods / body enhansers are avaliable?

well their is one post about a guy that says where to find those thing in japan do you remember

no clue, that's why i asked... can you help me find out?