Some progress pics on the sheetmetal, tunnel area. Gaping hole has been cut with a torch, tin snips, cut off wheel, and a can opener I think over the last 50 years. Throwin in some dash repair pics done recently as well. Someone has to be real, umm, dedicated(?) to use an 1/8th in. drill bit to perforate a hole in the dash for a gauge. That's my guess for what it was for anyway.