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Can somone tell me what the tip size is on a Roush axle back? I need to know if they measure 3.5" on the side and 4" measuring the tip from top to bottom, since they're oval, and from top of the tip to the back were the clamping end is, do they measure 8" ? Sent from my iPhone using the...

So Im planning on installing o/r longtubes and adding gt500 quad tip axlebacks, has somone done this and is there any videos of this setup on the sound ? Really interested on how it sounds Sent from my iPhone using the svtperformance.com mobile app

So this guy is talking alot of smack about his 2013 or 2014 Shelby gt500(he says its a 2015 lol) whats the difference 13/14? Anyways , he says his 5.8 is so much more efficient(without supercharger) vs my 2015 Mustang gt 5.0 engine that even if I have a supercharger (2.9 S2 Whipple) he would...

So this guy is talking alot of smack about his 2013 or 2014 Shelby gt500(he says its a 2015 lol) whats the difference 13/14? Anyways , he says his 5.8 is so much more efficient(without supercharger) vs my 2015 Mustang gt 5.0 engine that even if I have a supercharger (2.9 S2 Whipple) he would...

So I just bought a 2013 Mustang gt with 40,000miles, every runs perfectly but cold start up the engine bucks at idle and drops to 300rpm and sounds like loose parts inside motor, but when warmed up and during the day it runs perfectly. Listen to the video and help me find whats causing this...