My exhaust

[Jonah52]

The Denali has true duals all the way back to the OEM muffler. These dual pipes are 2.75''. So what I did was buy a 3'' Magnaflow Y-pipe, had it notched and welded onto the existing, stock true duals, that was i could just run a single in, single out 3'' muffler and retain use of the factory tail section.