HI CJ,
Over the years ...I have helped a lot of my Cobra bretheren with this problem, unfortunately you are in Georgia. I have a selection of tools that were custom made just for this problem up to and including the one from Enzo shown earlier in this thread. One of my buddies machined the end to accept a 1 1/4 inch socket with a hald inch drive and that helps it a lot...even with an air wrench.
The tool that works every time has a 10 inch solid steel wheel with three slots that go over the ears of the knock off. in the center of the wheel a solid steel shaft that inserts into the wheel hub and extends out 18 inches. At the far end of the shaft are welded arms to use a sledge hammer on to apply all the force to loosen the knock off you need....it does come loose every time and will never contact all that expensive paint in the wheel well.
I am out of town right now but, I will take a picture when I return home and post it ASAP.......$20 worth of material and a welder and you too will have the solution to this Cobra problem.
BTW the design was invented and fabricated originally by Rick427.......patent fees are due and payable.
Best Regards,
Tony R.