I'm picking up my car with the GT500 rear bumper installed on Monday. Next month I'm planning on getting dual exhaust. What tip size will fill out the cut outs well 4" or 5"? Does anyone have any pictures of the sizes they're running?

 

I believe most aftermarket companies like Borla run a 4" tip.

 

Thanks, Xedes. That helped I looked at AM for their axle back setups and most are 4". They look kind of small, though. I'm putting GT axle backs on so I can do a few different options.

 

I think 4" or 4.5" is about the biggest I've seen. Anything larger than that and you have to trade your Mustang in on a Subaru!

 

My GT 500/CS rear end with 4" exhaust tips for reference:

 

The stock tips that came on my GTCS fill it out well, can't remember the size.

 

4" for sure

 

Mine are 4"... I'll refrain from posting my 'dat ***' pics since you've already seen them all tanner

 

Stock rolled tip vs pypes muffler delete tip with gt/cs bumper

 

Borla here with 4 inch rolled tips. Looks awesome on my GT. Stock rear bumper.