OK we all know dodges are junk, for the most part they all are. That's what makes them fun to modify!
Probably jumped a little hard on flowmaster right off the bat but I had 2 sets with baffle problems on a daily driven 71 chevy p.u. At the time I guess I was being dumb and never called them. I have sense called them and they say they have a 3 year warranty so they may have covered them, who knows. Just so you know the magnaflows do have a lifetime warranty and seem to be a better quality product in my opinion, mainly due to the stainless steel constuction. As far as times with and without mufflers, it is just a street truck and ran high 14's through the exhaust. Never ran it without. I did run some one chamber 3" flowmasters on my 68 camaro and it went from 10.80's open to 11.10's through the exhaust. It was just a little 383 pump gas motor so can't really compare that to 1600hp. Just trying to help out the post, not start a sarcastic typing war.