Looking real good 66Ccode! Nice plug welds, I hope to get there eventually. Did you weld the floor supports and front floor cross-member in before or after the full floor? Just curious, cause I'm installing a full floor and trying to keep the supports and cross-member in place to lay the floor in on top to mark the bottom of the floor to drill my holes. Make sense?
In the first pic I sent the level is on a 1" tubular bar welded in, I have the supports tacked to it. Now to get the rest of it stable so the floor can slip in.....should be fun.
Have you started working the wrinkles out? Should be much easier doing it with the firewall out, I would think.