65 tank?

Its about 1/8 thick jute. looks pretty good for 55 year old under the car insulation! You think that old tank is a 71 production date replacement?
I cant speak with authority about the tank, but when I transferred the tank from the 66 Dart donor to my 65 Bcuda the insulating ‘blanket’ didnt have any lines and looked far more weathered while still serviceable.