1st of all welcome to the forums man. Hope you'll find this place as entertaining and informative as the rest of us do.
As far as the headers go, OBX is great (I used to have one), but at this point AWR header will give you the most power out of all of the headers available right now.
oh and the last thing. Search feature on these forums is a great tool. You won't believe how much info you can actually find here. Although if for some odd reason you can't find the answer to your question, then post a thread with your question and then lots of people will help you out. (thumb)