We also installed a Jones muffler on my dads truck and it sounds great! Maybe a bit too quiet at idle but you can hear it when you get on it.

From my research they are re-branded Magnaflows (part #'s match up, case dimensions are the same, etc.) FYI......

 

I'm running dual 3", Magnaflow 12599 muffler, LT headers, and no cats on my truck. Its quiet enough to not attract unwanted attention, but still screams up top.

 

Go with the jones muffler. I've put 3 seperate ones on and they're awesome. Im running a single in dual out right now with LT and ORY and i love it. Cruising on hwy i almost forget i have exhaust bc of how quiet it is but it screams at wot.

 

Yea if I cant hear it cruisin or at idle I dont want it. I like it louder at idle so I can hear that cam poppin. I'm just quieting down so the cops will be happy.

 

My 22" x 3" big body Magnaflow sounded stock with the manifolds, but was really loud (woke up the neighbors at startup) with my catless LPP longtubes. Put another 7" round Magnaflow in front of it and it's perfect. Stock sounding around town, but screams under heavy throttle.

I had a Borla before, it burned out in less than 3 years. I've been 5 on the Magnaflow big body and it still sounds great. Never going back to Borla.

 

Man theres a ton of threads on this. If you want louder just put a smaller size jones or magna on it!!

 

Did you ever decide on a muffler?

 

I like the sound of long dynomax bullets.

 

I ended up gettin two spintech super pro street 9000's. It is not near as loud as before but it sounds awesome. If your gonna have over 500 hp you gotta have the sound to go with it and I got it with the spintech mufflers. I will post a video when I get a chance.