That FM is still a tad too loud but at least it doesn't scream when you put on the gas like mine does.
A friend just called me and I told him about it. He said there's a muff shop in Auburn...29 miles away...that specializes in classic cars/truck muffs. I'll call them tomorrow and drive down if they're open.
As to the over heating, I think my OEM rad is clogged some...could be timing I guess cuz just put on the new intake and dual carbs.