I run a 350 with headers to 2 chamber flowmasters. I am going to be running my Blazer as a commute vehicle for a while and am looking for a muffler that is both somewhat quiet and has good flow. I have heard a little about the "Delta" Flowmasters and wonder if they are quiet? What do you guys run for mufflers? Mark 1986 K5 All stock except a 330HP crate 350 and Ranchos!