When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
The cheapest way would be to buy a universal high flow cat like A Carsound and have it installed by an exhuast shop. That should cost about $150 v. $225 for a Random tech cat.
Is there something wrong with your current cat? Otherwise it probably won't do anything, but make the exhaust more raspy and add 1hp at redline.