65 DART WAGON 2 DOOR CONVERSION
I welded in 2x2 box tubing from the torsion bar crossmember back to the rear frame.
I cut the end of the rear frame were the front spring hanger mounts and installed the box tubing into the frame about 6".
This keeps the whole car stiff so cutting the B-pillar out doesn't cause any worries about the car sagging in the middle and since the floor had already been replaced everything is good.