The T-1 Air Compressor would be a really useful addition to the jeep.
From left to right – above. Instructions for the installation of the T-1 Air Compressor. These photos are courtesy of Prem Zizka, Cleveland, OH, 3/45 1945 GPW.
More of the wonderful pages and pictures received from Prem.
Yet more pictures from Prem. It’s on a par with opening King Tut’s tomb anytime you unseal the sacred Willys factory seals to reveal the treasures within!. 
A final picture from Prem.