I have another one slightly different than what is pictured. A buddy got a cooler assembly with a 68 Hemi Charger years ago. At the time I thought the brackets were the same for my 68 Hemi Road Runner so I made a couple of copies. I since found my original cooler w/brackets and it used the 68-9 version shown. I checked my "copied" brackets and they look like the squared off 70 version but they are about an inch longer than the 68-9 ones. The additional length is in the side with the single hole. It almost looks like the Daytona dimensions with different bends. We never used the cooler on that 68 Charger and no idea if it was original to the car or not. If the OP wants to try one, you are more than welcome to it, modify it as you need. Send me a PM with an address and I will get it out when I can.

Jim