Bill,
Many Thanks!!!
The 50# roofing paper was my choice if I could not find a reproduction piece.
That insulation was part of the "Custom Comfort Option" from the factory. Boy have things come a long way from a piece of tar paper being an extra option.
Custom Comfort Option - left arm rest...right-hand sunshade...chrome cigar lighter...full six inch foam rubber seat cushion with special trim...special cab insulation...left-hand door outside key lock.
Any body know what that option cost in 1961???
Steve