How much would a new exhaust do to my hp. I only have a cold air intake and 180 stat. mods right now. What should I get, I don't want to spend too much money.

high flow cat and muffler

brands like magnaflow, flowmaster, or dynomax seem to be the most popular here.

i bought my flowmaster muffler from jegs for about $80 shipped.
i know some members have paid about $125 for a cat and installation.

At the right shop you should be able to get a cat and muffler put on for about $300-400 (including parts)

Don't forget some sweet looking tips!

Where can I get a reasonably priced dynomax muffler and a high flow cat.

Jegs is the best place

www.jegs.com

Put your year and trim level in your signature. Do you have an SE, SLE, SSE, or SSEi?

If you have an SE (and possibly some SLE'*) you may have 2.25" piping, which you could increase to 2.5". If it'* 2.5" already, stick with the stock piping. It'* mandrel-bent stainless steel.