Hi Randy,
Some of the instruments on my Series 80 have a “Bar” that runs flat across the back of the instrument through two bar holders and attaches over the two bolts.
In the next few days, I will check my ignition switch / lighting cluster.
The Delco ignition is correct, as is the Waltham “8-day” clock.
The toggles for the Delco ignition / lights are available in either nickel or chrome through a 20’s Buick supplier, like Bob’s Automobilia.
Peter Williams
What type of lenses do you need? I have a pair of B&L Stars that may be appropriate for your vehicle. They are in very good shape, although they do not match in color, as one is slightly violet, while the other is nicely clear. I believe that they belong on a later Series 80 than mine, which is a 1924. Advise as you wish.