Well if any of you have a stock itr muffler for sale, after all this swapping to new one's, I'm looking. I want to make mine quieter.

Do you know the size pipe going into the stock itr muffler? Right now I have a 2.5 in collector (type r) and a test pipe with 2.5 cat back. It's a greddy evo and I thought that maybe going to a stock muffler would help with the noise and tickets a bit. I just got my 6th today. the stock look may help but I'm worried about performance loss too.