I've pretty much narrowed my exhausting exhaust search to either SLP lm1's or mac flowpaths. I like the way both sound in different ways. How will the mac 2.5" stainless catback sound with the stock h? I'm afraid it won't be much louder than stock. I know the slp will be pretty loud with the stock h, but I'm not sure if I'll notice much of a difference with the mac. I've listened to tons of sound clips, and know the tones, just not the volume. I came from a gt with magnapacks and a dr gas offroad, it was still not too loud for me at all, keep that in mind.