Alright, in a few weeks I plan on putting some MAC headers on my car and will be deleting the cat. I dont want just a straight pipe there though, cuz I dont want any raspyness and I also have a borla, so that would probably be bad. Ive heard that people put in a dynomax bullet muffler in there that fits perfectly. However, i was wondering if anyone has used the summit 18 inch glasspack muffler?I think its the same length as the dynomax, but am not sure. how do you think that would sound?