High flow cats, plz help.
I need new catalytic converters on my car and my first thought was american muscle. On tht site, they sell a pair of pypes high flow cats. My car has 4 converters on it stock ( its a 02 3.8L). Question is, am I supposed to install one on each side and call it a day or do I have to buy 2 sets and put 2 on each side. Anyone do anything similar to this before?