2003 XLT V6, Exhaust Issue?

[03Explo20]

Just noticed my truck making sort of a "put - put put" type noise from underneath. It seems to fade away once the truck is driven and gets hot. Could this be an exhaust leak somewhere? It's so friggin cold and rainy here that I can't get it in the air in the driveway to have a look underneath.

Engine seems to be running great. I doubt it's anything mechanical.

Anyone have any thoughts? Do these SS exhausts go bad like in the old days?

 

[03Explo20]

Found out today the left cat had a hole. $325 to replace. Anyone ever change a muffler out on one of these? Is there any welding to be done? Difficult level on this work, would you say a slightly knowledgeable fella can do the work in his garage?

 

[Mbrooks420]

The factory exhaust is possibly welded together. The replacements will come in slip on and clamp versions. Anyone with a fair mechanical ability and a decent set of tools should have little trouble replacing the muffler.