I'm running stock manifold to custom straight pipe to gutted main cat to CS cat back on my NA. And have been running this for 2 years now and love it. Pretty deep and grumbly at low RPM and loud as hell at WOT especially way up the tach it just screams. Got pulled over one time by as ******* cop in VA, but not because it is too loud, turns out all straight through mufflers are illegal in VA. The tone is great around town and for short drives, but on long hour after hour drives, it becomes a bit of a drone in the background.

All in all I recomend the CS , especially if you are on a budget.
by the way my setup is good for flames up to 3-4 feet....I mean flames you can see in all 3 mirrors

 

I just got finished modifying and installing my CS! It sounds cool, I have the cats in still so it is not loud. It is just right actually, dont even have the silencer in. I would recommend the exaust to anyone who would like to save a little money! Except during eeither shipping or manufacturing, it was scrached a little and a has a ding. the scratch is no biggy, it is on the top so tht ebemper covers it, but the ding is on the bottom of the can. Oh well, still looks and sounds good!