[Vic1947]

After a second look at how the floor fits between the A-pillars, I realized I wasn't nearly as far off as I originally thought. Fortunately, the driver side front lower door pillar had enough metal left to bolt to the new floor. There's a 1/2" offset where the bottom of the pillar meets the floor. This allows the lip on the front of the floor to match up to the edge of the firewall. Looks like I may still need to spread the A-pillars as much as 1/2", but I can't confirm that until I get the f/w back from the metal blasters. The passenger side lower door pillar is rotted completely out, so there's no reference holes to work off of.

Meanwhile, I repaired some rotted out areas on the L-brackets that attach the rear of the cab wall to the floor. Reinstalled the floor with the A-pillars spread out slightly. Measurements look fairly close, so now I just need to get the firewall in place and see how it fits to the pinchweld lip on the floor.