I used the uprights as the came but had to trim an inch off the bottom to fit ontop of the new subrails. Made some simple bottoms that ill be able to bolt in. I also hate having to get behind these areas to nut and bolt, so used nutserts since you cant see any of it once its together.
I bought a curved panel and the uprights long time ago cause i thought they were bolt in but i have now learned that once you change the subrails nothing stock fits, makes sense obviously but i wasnt thinking that when i started getting stuff. The uprights for the hinges were sold to me as 28-31 fitment, but i now know there is different ones. But its what i got so its what i used. The curved panel was way to much work to modify to fit, i should have just made one from scratch but didnt want to waste the money i spent on it. It was cut in the middle to correct the width, and had to make new side flanges and re curve the panel to fit into my subrails.
Finished Hinge mounts, triangle sides, and curved panel. Everything has been rusting so quick even with not handling with bare hands, so i have started etching the bare metal once im finished with the area.
one thing to mention, I dont know about original hardware, cause my body came with nothing for the rumble lid it was all cut out/ missing, but every hole is so oversize on the aftermarket parts. I have tried to only buy the "ford licensed" replacement parts if original have not been sourced but it hasnt seemed to mean much. The pivot bolt for the hinges was so oversize on the aftermarket brackets you could move the lid back in forth. To correct it i drill out the center hole to 3/4" and machined a reduced to fit the pivot bolts. Much more precise fit and lid opens and closes without wobbling around.