Which to choose? UPR or Magnaflow x-pipe w/cats

When I first bought my pony in 2000, it was an Indiana car. Living in the Chicago area, I had to get it emissions tested. It failed. Why, bad cats. I did some research and got a Magnaflow hi-flow system. I have had no problems since and there was a "seat of the pants" gratification from them.

Go with Magna-flow!