[transmaro93]

then you are going to need to run cats... and poss the air pump still... maybe not the air pump... iv heard of people getting by without them... but dont hold me to that... if your running cats... i would go with somthing louder like gmmg or stainless works with lt's... should sound good with the cam and not to loud... my car has no cats so its like super loud wiht the gmmg... but sounds mean... but cats would quiet it down..