1972 Demon - tire and wheel question

I do apologize for the hatchet job comment, that was probably harsher than I needed to be, but that car isn't right.

So, this is your car



Pay special attention to the area under the hinges. The hinges are not tied into anything, they just "float" under the rear panel. That's NOT good. Also, look at how the inner rail for the trunk is buckled in the middle...

Here's a stock car.



Notice how the hinges are tied into the wheel tubs? That doesn't just support the hinges, which is important because your entire rear deck is going to flex when you open and close your trunk. More importantly, they tie the inner structure of the car, which supports the roof and rear deck, to the wheel tubs and ultimately the frame rails.

Also notice the bracing on the outside of the hinges? That is the inner roof structure continuing down and tying into the wheel tub. Again, that structure supports the rear corners of the roof and the rear deck. You don't have anything there!!! So, where is the inner structure for the back of roof tied in? Is it just floating above the wheel tubs?

Here's another car that has been back halved, courtesy of HemiDenny's thread.



Notice how he tied those inner structures into his tubs? That's the way it should be done.

And this is what that back half looks like...





Now, HemiDenny is the man and does incredible work, above and beyond. So all back half's don't have to look that good to be functional. But, they should look a lot more like that than what I see in the pictures you posted. There has to be some serious additional bracing present to make the car even as strong as it was before, let alone strong enough to bother having tires that wide. And I don't see anything like that on your car. And the factory rails have no place being back there if they aren't welded into the floor and inner structures, they were not meant to stand alone, they're part of a unibody. Look at the rails under your car- there's nothing but air above them. Those rails are not meant to work like that.

Unless there is a lot more structure under there that I'm not seeing, I would be concerned about the structural integrity of the car.