I insulated and soundproofed much like most are recommending. It definitely dampens the sound. But honestly, I think the biggest reduction in cab noise was the result of sticking the sound barrier to the underside of the hood.

Last edited by DES57; 12/29/2019 8:05 PM. Reason: Spelling
1957 Chevy 3200
Daily Driver
PS, A/C, Tilt column, Rebuilt 350, Rebuilt TH350, Reupholstered Bench Seat, sound proof/insulated, LED headlights/taillights/backup lights/interior courtesy lights.
Follow in the DITY