OK Guys, here is my dilemma. I currently have a 1948 3600 with a 1970ish 250-6. Fenton split headers and glass pacs running all the way out the back. I have been running this set up for about 6 years. I use a wireless bluetooth speaker to run some tunes and have to run full volume to really enjoy the music over running about 2500 rpms with the windows up. Would quieter mufflers make a discernible difference? It is really tough to tell if the overall noise is from the exhaust, or other road noise.
I do have some bubble/foil type insulation under the rubber mat, also running up to just below the back glass, behind the door covers and under the headliner.
What say y'all.
