I agree with MNSmith. I replaced the inner panel on my truck with 1/8" plate, tack welded it around the edges and spot welded it using some of the holes in the firewall so it would be solid.


'66 C60 body, '97 C6500 chassis, '07 LBZ Duramax with Allison 1000
https://photos.app.goo.gl/cxwv1C6Ay2oxYH7u7