GMMG and only grott style headers?
There is no reason why you'd HAVE to have Grott style headers. Yes, the sound will be different (slightly) between headers, but it isn't going to make a huge difference.
FWIW though, there are a few people on here that run Kooks LTs, catted-y, and GMMG and absolutely love the sound.
Do it once, do it right...what you don't pay now, you will usually pay later.
Steve
Steve

I just got Kooks SS LTs + Catted Y installed and, along with my GMMG, it sounds incredible!!!




