larrendeuce
Member
I found this is a good comparison to tell the sound difference between the H and X.
Spintech Mufflers, Off Road X pipe, Manifolds 2002 GT
Spintech Mufflers, Catted H pipe, manifolds, 2001 Bullitt
Spintech Mufflers, Off Road X pipe, Manifolds 2002 GT
Spintech Mufflers, Catted H pipe, manifolds, 2001 Bullitt