I feel like I already know the answer to this but just wanted some clarification from people that are more knowledgeable than me. I'm running 1 7/8 headers with 3" piping all the way back. I just installed JBA axlebacks but didn't realize that they are 2.5" instead of 3". I was running the MBRP and that was stupid loud and obnoxious so I went with JBA to get a more chambered muffler. The guy welded it just fine but I'm "worried" that sincenits bot 3" all the way back, that "something" might happen. Given all I've done is add a small bit of back pressure to just the muffler, this shouldn't be anything to be concerned about correct? The car is more tame now and I can actually drive with the windows down now, which I haven't done in who knows how long haha. What you guys think? Thanks in advance for your replies and suggestions.