i have my 3" exhaust dumping right before the diff. it's a moroso spiral flow muffler. it sounds nice(possibly a little loud). i made a complete exhaust exiting in the stock place and with the same muffler the car was quieter than my very quiet NAsetup was. also i couldnt hear the turbo spool up as well, probably had more backpressure too. also my exhaust pops ALOT. sometimes it pretty much backfires, could be somwhat because of my AFR, but i think it has somthing to do with the shortness of the exhaust.