Agreed, the 4.6s sound awesome with almost every setup, they're just raw and raunchy sounding. Only reason I'm not going straight for the loud ones is everybody keeps saying they're similar to LM1s but with a better tone. My buddy in college had a Mach 1 with LM1s and no cats and it only sounded good at WOT. Just putting around it sounded like it was farting in between shifts and it BOOMED inside. So we'll see, plus the muffs are only like $46 to buy separate so it won't cost anything to swap them out