I used this stuff
sound deadener 32x54 $38.00 roll Not as thick as the expensive stuff but it was easy to apply and afforadable
a few pics The supplier is out of Arizona and NOT a chevy supplier.
Ive been reading on the forum of some people using
peel and seal from the hardware store
I did just the center section of the door on my 50
door pic The stuff I used is self stick on a clean surface. Dynamat or Hushmat are probably better but were not in my budget
Good luck
