Yeah, My car is currently an NA. I'll be doing a turbo swap next winter, but wanted to know how they have been/performed on the NA's. I wouldn't mind upgrading my exhaust (currently 2.5" all the way) but don;t want it to be any louder than it already is. Infact I would like mine to be a bit quieter. Maybe to save the coins I'll just get rid of my N1 muffeler and put something a bit quieter on. Does Anyone have any experience with louder than stock, but rather quiet mufflers. LMK which one you have