I run separate 2" pipes from the Fenton headers thru dual Xlerator mufflers (one on each side) with the exhaust tips exiting out in front of the rear wheels. It has a little rumble at idle and you can hear it when accelerating, but not obnoxiously load. When cruising the exhaust seems to blend in with the road noise. I like the setup.

51 GMC 100 with 59 chevy 261 under the hood.
3 on the floor with 3.42 gear.