OK, I took a few pictures. A thousand words, and all that...

First, here are the voltmeter studs protruding through the instrument cluster where the ammeter formerly lived. The studs on the voltmeter are a little closer together than the ones on the ammeter were, but that's not going to be a big deal. I obviosly will need some plastic sleeves with an inside diameter just larger than the studs OD. And, they should have a flange on the end. I figured I'd check the hardware section at Lowes or Home Depot and if I come up empty handed, I'd look for something in the McMaster-Carr catalog. Anyone got any ideas?