I have only owned my gtp since november and need some advice on mods. So far i only have an intake and a downpipe but i am ordering a pulley next week and a pcm very soon. What other supporting mods do i need so i dont have kr. im also looking into meth injection. i have some people running their mouths about prixs. what do i need to hit low 13's in my car so i can beat these retards?