Living in the Past
SILVER Star
Not sure why you have to flatten the original hinges when a spacer on the tailgate size would do the trick. Thickness of the spacer would be the depth of the notch in the back minus slightly less than the thickness of the weatherstripping used so it seals tight. Same would apply to the latches on the sides. Not sure about shoulder bolts for the chains on the side. They might need be set in slightly to clear the tailgate now is flush with the back. Would also be sure to reinforce the shoulder bolts. A lot more weight can be apply verse swinging doors. Couple seat on the end of the tailgate with have a lot of leverage working against the shoulder bolts.I installed 8mm riv-nuts after squaring up my tailgate and creating an even gap on bottom and sides. Using the original lower three hinges after flattening out the slight bend they had originally. On later models the OEM tailgate will fit inside the side supports unlike the original sitting overlapped with rear opening sides and bottom. Riv-nuts do barely protrude above skin,1/16" or so but with a 1/16" rubber spacer makes it fit perfect. I use thin rubber on all contact points to avoid paint on paint rubbing. I went to the wrecking yard and found nice weatherstripping to go around the tailgate to close the gaps and stop the rattles. it takes some trial and error on fitting the weather strip.
-Bruce
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