Pauly -
I agree about the headers being for show but that's pretty much the long & short of building a 58 long bed. Ya sure don't build it to race against the kids in their rice burners - especially at my age - and I sure as heck hope my days of hauling livestock are long gone!
Anyhow, you mentioned the X pipe system decreasing the resonance. Does it also decrease the volume?
THX.