i have the alphawerks header, megan s-pipe and the trd axle back exhaust and i was wonderin if i should A)buy zpi mid-pipe if it will fit
B)Go to my local exhaust shop and get a custom one built with a resinator and a high flow cat but how big of piping should i get
C)buy a cat back system and if so which one
if u guys have any suggestions please let me know thanx

 

The ZPI will fit. But it will be really loud with those headers. I would go with ZPI mid pipe with a small resonator and be set.