I like my Flowmaster Force II system. It has a nice deep sound. I've got a magnaflow resonator attached to some hi flow cats and down pipes from SCP which get a bit loud when your going up a hill but, I guess that's to be expected when you go for free flowing. In front of that I got a set of ported stock manifolds from Tbird88. He did a real nice job on them too. I got everything used for about twenty cents on the dollar. I really lucked out on that one.