With my swapped in LQ9, I had to re-use the 5.3 factory y-pipe & exhaust. So...I know that my whole exhaust system is currently the weak point. I am going with just the muffler for now. Longer term, I'm looking for a used 6.0 two piece y-pipe and factory Denali or Escalade mufflers & pipe.
The Jones MF2590 was $63 shipped from Amazon and one of the better local shops quoted me $60 to weld it in. This will do until I find a reasonably priced 6.0 two piece y-pipe.
My goal for this build is to have a sleeper...a Dr. Jeckyl & Mr. Hyde. If I want to take guests to dinner in it, they would never know of the performance...until that squirt in the Range Rover thinks he can pass. This is also low budget build (for a change).