Replacement mid pipe for factory exhaust

[svt_redf1re]

Hey guys, I'm looking at getting a new mid pipe for my 2012 GT500 but I'm not sure what size to go with to be able to bolt right up to factory manifolds and cat back.

This MRT says it bolts in, looks like it's 2.75 factory connect on the manifold side, but 2.5" on the catback side and everything I've read says that 2012 has a 2.75 exhaust

MRT Engineering 2011-2014 Shelby GT500 MaxFlow Off Road H Pipe - 2.5 Inch

For the driver seeking peak performance, prudent customization and calibration doesn't end under the hood. A carefully selected mid-pipe upgrade enhances both driving power and exhaust sound. MRT Performance has engineered the MaxFlow Series H-Pipe for the 2011-2014 Shelby GT500 Mustang. The MRT...

www.lethalperformance.com

This Stainless works also says it bolts up to factory manifolds (2.75) but I believe has a 3" catback connect.

Stainless Works Stainless Works Off-Road Leads H-Pipe Factory Connect (2011-2014 Mustang) - GT11ORH

Stainless Works Stainless Works Off-Road Leads H-Pipe Factory Connect (2011-2014 Mustang) - GT11ORH 2011-14 Shelby GT500. All tubes are CNC mandrel bent for optimal flow. Made from 304 stainless steel for maximum corrosion resistance. 3" off-road h-pipe

www.lethalperformance.com

Not sure which one of these to go with or which one will actually fit as I don't have the car yet to measure. If any of you are using these or know what I should get that will fit correctly I'd much appreciate it! TIA

 

[1 Alibi 2]

From the MRT link:
"
This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles.

Purchasing this product requires you to sign our Vehicle Compliance Waiver HERE "
.
From the Stainless works link:
.
" FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE. THE SALE, USE, OR INSTALLATION OF THIS PRODUCT MAY ALSO BE ILLEGAL NATIONWIDE UNDER THE FEDERAL CLEAN AIR ACT (42 U.S.C. § 7522(A)(3)) "
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Running no cats will throw codes,.............what's the plan ??
.

 

[enormous]

Your gonna need a plan as noted above. Nobody will want to tune it for liability reasons .....
Plus, is going to be Nascar loud, stink and not very tasteful sound wise to most people.

 

[1Kona_Venom]

Your gonna need a plan as noted above. Nobody will want to tune it for liability reasons .....
Plus, is going to be Nascar loud, stink and not very tasteful sound wise to most people.

GTFO........

Its hardly gonna be NASCAR loud, it'll burn the production oils off at first which isnt bad, and adding an off road H pipe to an otherwise stock system is a very tasteful and desirable mod here in the U.S.



OP, looking at my 2012 build sheet, I had the Lethal O/R H....did they stop carrying it?

Hit me up via PM if you need a place to get it tuned that WILL tune out the check engine lights etc