What year bed is this

[AuroraGirl]

Your picture just reminded me that there was also a change in the construction of the fuel doors. I don't know what year that happened. Sometime before '84 I believe.

my picture is of a 1980 bed
I should look at the one on my 1980 which is a 1981-83 presumably

 

[AuroraGirl]

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Interesting, i bet the plastic liner uses the new made holes to attach to the outer skin to completely seal up the opening from dust/dirt/bugs/water
The shape of the opening is slightly different, and the thing may even be slightly wider.

 

[Grit dog]

That's odd, because I have two 73's a K10, and a K20, both have the doors, and both are original.

Nope.