Just FYI --- On a tri-five chevy -- it's far easier to just pull the front sheetmetal off as a unit --- I tape a couple layers of green tape on the leading edge of the doors and the rear of the fenders and the edge of the cowl -- pull the hood -- There's one bolt (and some shims) at the top of each fender by the cowl -- and one at the bottom (and some shims) just ahead of the door..... two bolts (and some shims) at the core support -- three guys and walk it off.
I usually bolt them to those cheap ass furniture dollies you get at Harbor Freight and a 4 X 8 Sheet of plywood... cover it for protection and push it out of the way.
SO much easier then to access everything else.