Tsp rumbler cat-back
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Tsp rumbler cat-back
I recently purchased pacesetter LT's for my LS1 along with the TSP rumbler cat-back and the TSP catted Y-pipe. I really wanted to try out the borla XR-1 muffler so I purchased that as well. I was going to replace the bullet muffler that comes with the cat-back with the XR-1. I was just curious if anyone has done this before?