Well Tom, after seeing the pics, I was going to make it a harder project than it really is. I was thinking of a custom fab for the mount, now I realize all I need to do is hit the junkyard and find an existing 6 on 5.5 spare mount. That looks like a 2 hour project...tops. Then I can get that 100lb spare off the roof, which will help in gas and prevent the risk of a future rack failure. Jack, I know you are worried about the door, but 99.9% of the time it is closed and all the weight is shared on the latch and frame of the door. When we wheel, think about how much force is applied to the luggage rack!!! Its only a matter of time until one fails, in Moab one of my rack brackets failed, I have since modded the brackets, they will never fail again, but it was certainly an eye opener. So much force on the crossbars with that weight sling shotting around up there.
I will post pics as I go along, maybe write up a "How to".