3" exhaust reducing down to 2 1/2" after x-pipe

.05 means jack.. 10.55 vs. 10.50. Big whoop.

I'd rather have a queiter car that's enjoyable to be in and doesn't throw dust everywhere and run the .05 slower. We're bracket racing anyhow.
Mine isn`t exhaust loud, more motor loud. the 3 1/2" system doesn`t have any back pressure, don`t rack, or drone. No need for cut outs or dumps. 505" strokers have ample low end. No dirt roads around where I drive to stir up dust. Only problem I have is, it likes gasoline ! lol