Well, the saga continues. I've had new ideas lately and yesterday talked dad into doing the fender swap for me.
*'09 mega fenders to the '06 long bed on the truck and patch existing large fender mounting holes
*Cutting and splicing the '09 shortbed fuel door into the new bed where it fits in the fender cutout and the fill necks are back to stock where I can actually pump fuel into it.
*'06 long bed forward mounted fuel door will become...wait for it....a coupler door for my onboard air tank. Open the door and plug in the hose.
I thought it was genius myself. I'm sure the comments will chastise me and my prerogative so have at it.