I was wondering what everyones opinions were on what exhaust I should get on my truck. I have a 1989 K2500 with a 350 TBI that was rebuilt into a 383 by the previous owner, and it currently has a single Xlerator muffler on it with dual 2.5 " tips exiting in front of the right rear tire. I was thinking of going with a single Flowmaster Super 10 muffler with dual 3.5" - 4" slant tips instead of the 2.5" ones, but then someone told me to get a SpinTech muffler. I just want to know what would be louder and sound better with my truck, a Flowmaster Super10 Series, or a SpinTech Super Pro Street Series? Any opinions are appreciated and thanks in advance.