I built a 4" system from holset to behind the rear door, This is the muffler I would recommend, Its really quieter than I thought it would be. I see you don't have too much room near the shift linkage and don't want the exhaust rubbing on speed bumps. This is not my daily driver just a toy, It rumbles pretty good.
It's just a universal 3" glass pack and my setup is side exit also. It will def be loud and cackle a lot. I have a srt with not much exhaust to and love all the noise
Why did you fit the muffler or even bigger Muffler where the OEM muffler was.....I'll be going to a 3" TU in conjunction with P-body shifting cables, and this nice Magnaflow muffler with twin turndowns...
http://www.magnaflow.com/02product/s...=main&id=11613