i just picked my 05 6.0 from the shop. had new hg and studs put in, egr cooler and valve delete, new oil cooler, hpop, and a turbo cleaning. now i want to change up my exhaust a little. i dont want anything real loud do to the fact that we drive my truck more than my wifes tahoe and i have a 2 year old and a new born that sleep while we are in the truck for a while. i want lower egt and for the truck to breath better. what difference would it make to jut put in a cat delete pipe with the stock muffler. i done mind if it changes the sound a little i just dont want that loud drone at highway speeds.