... it could also be for noise reduction
Our '60 Fairlane doesn't show signs of any insulation. Was some in the trunk lid but was mostly gone. removed remaining and replaced it with undercoat to appear correct. problem is the undercoat is so heavy lid won't stay up!!
As far as the trunk goes, my '61 Mercury trunk has the torsion bar setup, but I don't know about the '60 Fords or '60 Mercuries.
Yes, there are tension bars. Haven't gotten the guts to try and adj. them yet. Looks "easy" in the Ford manual. We'll see!!I'm sorry, that was meant for fordor41 ...