Car: 1999 Mustang GT Any opinions/experience running these with a Bassani O/R X? I received the X from my uncle who never installed it. Instead of doing some research about what types of mufflers sound good with the X, I slapped them onto my stock cat-back system with Flowmaster 10s welded in. Huge mistake. There was a horrible rattle at 1900-2200 RPM and deceleration. The car is my daily driver so I put my O/R Prochamber back on for the time being (I love it, I just want a different sound). After seeing many complaints about the Bassani O/R X and chambered mufflers, I ordered some 16" Dynomax Bullets to weld in place of the 10s (with different flowtubes, of course). They seem pretty solid and the packing reminds me of the LM2 muffler. Is that a good comparison?