Thanks guys, great tip on removing and prewiring & testing the gauges on the bench! Just ordered the harness from Vintage Wiring of Maine. Taking pictures of the "as is" before I start.

I'm putting a list together of all the odds and end I'll need such as firewall grommets, firewall insulation, pad and cover, etc, ductwork... plan is to get under the dash done all at once.

I'm hoping I can get it completed over the long Thanksgiving weekend.

Keep the great tips and suggestions coming!