I have cut the Grand Cherokee floor to the length I want and need to turn up a flange so it can be plug welded to the cab rear wall. I just traced the floor contour onto a piece of thick board I had from the kitchen sink cut out. Then cut it out with a jigsaw, clamped it over the end and hammered down the metal to form the flange needed.
Also welded up all the holes left from removing the frame rails that removed earlier. Placed some copper plate underneath and filled the hole with weld. Turned it over to add to any low spots in the weld before grinding it flat on both sides.
Dropped on the floor on the frame to see how it all fitted. I have about a 32mm/1.25" gap between the end of the floor and the cross member which the bed will sit on.
The firewall was set at the same distance as it was in the donor. The firewall lines up with where the original Willys one was as well. Can see everything cleared nicely and the centre body mount lined up as well with the gap for the isolator.
Time to start stripping the Willys cabs. This is the bottom of the 58 and will use the floor braces and body mounts from it first off.