Any '11-'12 GT replacement mufflers only?

The axle back kits are pretty much a muffler and new tip. The axle back part is only a couple feet long. I bought the Roush axle back kit for mine, install was a breeze.
 
the axle back kits pretty much are only the mufflers, hangers and tips.

General consesus is that if you want it civilized but still louder than stock and zero drone, GT500 axleback is the way to go (and cheapest)

Roush is next in line as far as low price but are quite a bit louder and the noise can get out of hand if you have a higher flowing mid pipe so seems like a lot of guys say if you go with them, leave the rest of the exhaust stock.