Magnaflow Muffler With Stock Exhaust

[01truck]

After searcing around for sound clips today, i think ive just about decided to put a magnaflow muffler in place of the stock one and leave all the factory exhaust pipe. Since my truck isnt at my house right now, what size muffler do I need to buy and what are the inlet/outlet dimensions I need when I order the muffler. Thanks

[MikeInCtown]

Here you go. I was asking about a Magnaflow a week or so ago. Second page, 2nd post has the part numbers of the various mufflers. Hoping that the 01 may be the same exhaust as the 04.

 

http://www.gm-trucks.com/forums/index.php?showtopic=94145

 

It will probably sound a bit meaner but not quite like a full exhaust. it will also not flow the same either. I was thinking of going the muffler only route, but what sense would it be if I kept on the same sie pipes with the same factory style bends. I found a kit for $400 that I'll be ordering soon.