hey, just bought 07 GC SRT8 silver LOADED TO THE BALLS. aBSOLUTELY LOVE IT . dont have a clue though about mods especially "COI" what is it??

COI? Do you mean CAI? Cold air intake. There are a handful of them offered. Mopar, GSM, DUB, and Volant to name a few. There are lots of exhaust options out there too. Are you looking for performance mods or appearance?

Welcome and congrats. I've started with more of the appearance mods at this point since its so badazz outta the box. CAI and exhaust will come in time for me...

my salesman told me about some type of exhaust modification that I am interested in, whats a good system to install?

The B&B cat-back seems to be a good mod. As well as a CAI.

can anyone please give a list of web sites that offer performance parts??

can anyone please give a list of web sites that offer performance parts??

you should just browse around on this site for info on parts there are many places to look for parts here and It really wouldnt be fair to list places that arent affiliated with this forum..
+ many of the aftermarket folks visit these forums often and are very helpful in answering any questions..

Good luck on your mods and keep up the talk on what you do! + Pictures and videos are a bonus! :D

Call Edwin @ Southern hot rod (888)-BIG-HEMI he will hook you up with a CAI and a cat back B&B system

There's a Mopar CAI on eBay for $219.00:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&ih=017&sspagename=STRK%3AMESE%3AIT&viewitem=&item=270082179034&rd=1,1