just got my 700 a few months ago and i'm lookin for mods to put on it like aftermarket exhaust, front bumper, skid plates and stuff like that. i haven't ever messed with racin fourwheelers before so i don't know whats good and whats not. the fourwheeler is completely stock right now. the first thing that i want is an exhaust. what do ya'll recommend as far as good sound and good performance?