I used Noico 80 mil. Did doors on both sides, roof and floor. The Noico worked very well ! pretty easy to install, did doors by putting cut pieces in freezer for 30 mins, made it easy to get into place and roll-out before it became to sticky to move around. Now very quite inside . Also did firewall and installed new door rubbers .

!956 Gmc Napco 4x4 Factory line built .