Hey Moose
My friend has a sheet metal shop and made me a complete box.
He even made a die to make the 1 1/4 roll in the top rail. made all new crossbraces
for under the wood and a new front panel. He took all the dimensions from my old box
which wasn't to rusty ,but banged up real bad.
The rear fenders came from bowtie reproductions in ohio. Of course after I purchased these I found a good set of rears.
I also have a pretty good set of 30 to 33 pu fenders I may post here when I get a chance to take a few photos