Front valance

I don't know the specifics of a 65 barracuda, but it should unbolt I think, unless it was a repair of some sort. if so, yes drilling and or grinding the welds makes sense. I would also consider welding patches in for the holes if you cant find another valence. You could even weld two halves together to make one if you have to. Welders save many a body panel. Good luck.