Bostonian 71 demon

B.R.E.Demon said

So, My plan is to do the rear half of the cage once the floor section is installed as I going to narrow the rear frame rails and install 38" tubs up to the narrowed frame rail. I have to get the support to the rear of the car prior to that. That way the rear of the car is structural prior to doing the quarter panels. View attachment 1716346968

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Are you going to make a cross member to tie your frame rails into ?
This will be interesting to see how you do this, if you plan on leaving the rest of the sheet metal alone.
I sectioned my entire pan after removing the spare tire well & the cut the ends of the rails away from the body, slid it together, rewelded the pan and then welded it back into a cross member I built with a drive line safety loop I added afterwards.