[DieselSJ]

Originally Posted by kwmech

Had to have the pipes made off of the manifold into the flowmaster Y pipe....here

https://www.summitracing.com/parts/f...QaAiEFEALw_wcB


then into the muffler and out the back. 3 '' single pipe is plenty unless your going to put in on the track

I did the same thing, but used the Magnaflow version of the Y. 3" high-flow cat to replace the old pancake style and the biggest Magnaflow muffler I could stuff under it. Nice and quiet on long drives..no drone. More power, better mileage.