[pjmoreland]

I have only removed/installed a couple of dashes and I too drilled out the windshield lip spot welds. I'm just thinking out loud here, but what if you just cut along the red line so that you can at least get the dash out of the truck so you can have a better look at what's going on? You may have to remove the windshield of this donor truck to complete this cut. After that, I'm thinking you might be able to clean it up by drilling out the spot weld on that brace to detach it from the dash top surface. Then you could cut the top along the blue line from above to clean it up (don't cut the brace). Then on the recipient truck, you'd need to cut along the blue line through the brace and carefully drill out the brace spot weld so the remnant of the brace can be removed and the new brace can be welded in its place.