Rear shock crossmember removal

Anybody ever drill out this panel? How painful is it? Spot welded around the entire perimeter? I’m building a custom 4 link and my upper brackets are encroaching on the shock mount bolt area. Before I just start chopping it out I thought it might be cleaner to remove the whole crossmember. 65 Valiant. Thanks!E5B7EFD2-AF80-4F92-AEBC-AD70B8D159C3.jpeg 368C9832-7935-457C-99F0-53FA2F5C14EE.jpeg DE041B5E-3AB3-43FC-982F-311ABE37CB21.jpeg