Once I got the floor welded in, I hammered the edge over the rocker panel to make the lip. Worked out good enough for me.
Found it was a lot easier to weld the underside spot welds with the cab off of the frame. Worked a lot better than when I tried to do the the front floor while sitting on the frame.
Then I made some cab mount braces out of 3x1.5" tubing that I cut one side off of. Should work just as good as the original mounts it had.
Also, I finally got the inner cowl and lower cowl put back on the driver's side. I knew I was going to need it to mock up the front fenders.