I have a bbk x pipe with catco high flow cats welded in.Got flowmaster am.thunder catback.Want to be a little louder and deeper sound. The flowmaster with o/r x was annoying thats y i put on the cats.Like the sound now but wish it was a little louder .
II's, hands down. And you're not going to want to hear this, but get rid of that BBK X. Look into VRS or something with a true X crossover. Ive never liked the BBK X sound.