So, major brain Fart.

I actually welded in the driver side floor pan without adding a hatch for the MC. (its my first Hot Rod) . I figured I would add the hatch after but that wasn't the right choice anyway. But as it turns out I needed to re work all the geometry and panels for the lower firewall to better fit the steering column, brake pedal and trans tunnel. Since the floor panel with hatch is literally where I step to enter and exit, I used 16 gauge (.060) and welded in a piano hinge plus added support flanges. I also finished the tunnel, the floor from firewall to trunk is 95% i will be adding a couple small filler panels around the cowling and a removable "shelf" under the dash.