I am running 3in turbo back. 2 dynomax race mufflers (basically 3in glasspacks w/ perforated cores and SS packing) and a 3" summit turbo muffler (although I read recently that it does not retain the full 3" ID on the 3" models. Whatever.... its probably 2 7/8.. no big deal. My car is stock quiet around town and roars nicely WOT. No buzzy Honda ---- here.

 

122 MSRP for the 3"

 

22" thrush glass pack and a magnaflow, don't know the model but 2.5" straight through, 5x8x14 oval. Car is very quiet even @ WOT. I've had a few people think its stock.