I'm looking to change out my flomaster 40's and im thinking about going with the SLP Loudmouth exaust. Every stang sounds just about the same out here and I want to seperate myself. They have 3 different systems..LOUDMOUTH, LOUDMOUTH 2, and The PRO FORCE.....anyone have these? hows the fittment? How do they sound/perform. Going to be bolted to BBK shorties-O/R X pipe....someone help me rate these...never heard any of them...so please someone shine some light on the topic