The GMC CCKW

1942 CCKW A1 bracket.
Could I have some help identifying this bracket fitted to the tray of this GMC .
It has a plate bolted to the floor with a couple of slots in it .
It has the remains of a retaining strap at the top of the board , the board is bolted upright to front inside of the tray .
There are two retainers that can be tensioned with large brass wingnuts attached to the board .

a TRAY in Aust is the back part of the truck that sits on the chassis and loads can be placed on it , a body is usually a fixed structure that may have sides and top etc and loads can be placed inside it ..

Thanks
Regards
Jim S.

We may have an English-American translation issue here.

What is a 'tray' of which you speak? Where are you; inside the cab, outside etc.

Tray is 'Ausie' for body.

It would be nice to have a photo of the bracket and it's location, then possibly some suggestions might be forthwith. One thing for certain, field modifications by the military and then 60 more years of otherwise modifications, it could be anythog. There is a CCKW for sale on Ebay that has had a battery holder mounted on the firewall under the hood. Definately a civilian modification because they did not have a batter cable long enough to reach the normal battery location.

Picture added.

i have never encountered anything like this. It is really neat though. I especially like the large butter fly type nuts for tightening down what ever it held on to. Even if I never knew what it was for, I would never remove it. It is excellently done and a great asset to the truck.

A modification I came across many years ago comes to mind. It was on a 43 GPW. There were added support post to the windshield than ran from just below the glass to the place where the bolts held the windshield onto the body. It was so well done it looked like a factory job, and I left it. The jeep had been a former AAF jeep so I theororized that it had something to do with prop blast and flat windshields. No real proof though. Then I found a photo of General MacArthur on a airfield in Korea riding in a WWII jeep with the same type of modification made to the windshield. I was glad I kept the modification and also displayed the photo with the jeep when it was on display.