Replacing Complete Firewall ?s

[anx]

Hi, I am building up a 69 shortbed. And my firewall is completly shot but the rest of my cab is in ok shape minus rockers.So.. I found donor cab for $5 and cut the firewall off. I cut it around the pillars on the roof and below the floor seam. I am trying to come up with a plan on doing this. I am thinking the easiest way would be to brace from the roof to the floor and cut the pillars near the top of the windshield and weld it together there. the floor area looks like it will be pretty straight forward.

But I figured I would ask here if anyone has done this with some pics. I did a search and didnt come up with much. Or any ideas tips would be great to.

Thanks, Chris