I did a bunch of measuring today. I pretty excited. I might just have to break out the plasma tomorrow. What'll slow me down is I want to drill the rest of the roof spot welds back of the B pillar. Then I'll separate the roof in the back to slide the sectioned part forward.
I think how I can make it work is to slide the C pillar forward 26". That'll put the C pillar 10" back from the B pillar. The rear corners will be right at the back of the rear wheel wells. In fact the inner part of the D pillar will be about and inch or so from the wheel arch inside.
Then I'm thinking of drilling loose the B pillar and moving it back to meet the C pillar and filling the gap between the two. I can stretch the door with another pair of doors I have. It'll be a big door, but I measured the door on my Tundra and on a Crown Vic we have at the shop and the new door will still be shorter than those. Maybe then I won't sit with my head looking out of the rear door window all of the time.
If your gonna do that why not just cut the top right behind the B pillar and weld some sheet metal to the top side of the sides and do the same to the top you cut off. That way you could have a removable top.