I own a 2009 6.1 SRT8 with a 6-speed manual gearbox, I've been in the market for exhaust systems for a while now, and I'm about to pull the trigger on the Zoomers. At a Cars and Coffee earlier today, some fellow Challenger owners gave me a listen to their exhaust notes, one guy had a manual R/T...
SLP LM2 on my Mustang Cobra
Cobra had no cats, hence why its louder at idle.
SLP LM1 on my Challenger
Has stock mid pipe/cats and stock headers.