Well that was fun.
Cut the roof, cut the floor - then split the cross tube in the back - and jacked it 8 inches apart to get a C5 torque tube down the middle. Everything stayed in alignment and slid so easy I could have moved it by hand.
Glad I made a profile template - the roof is now flat with no curve. I'm going to put in some support channels when I stitch it back up.
Next, install cross bracing - then mockup the rear suspension, set the trans/diff in and put the torque tube in to see if I widened it enough. Plans are to add a wedge cut into the rear fenders (back all the way up to the door latch) to widen the back of the wheel well 2 inches on each side.
Beer:30
Jim