Paulk,
71 corniche, NICE! I have a lot of choices when I reach for a set of keys in summer I mostly pick the shadow. As you say, they are a little bit of work to maintain, but if you do it's totally worth it. I get more thumbs up, and selfies, and smiles with that car than any of the others and one of them is a mini!
The Avanti has done nothing yet except sit in my yard, but I've had more folks stop and ask about it so I expect it will be a smile engine as well when I get to driving it.
I just bought this house last fall so I am not working on the cars much, but I'm finally getting ahead of things so maybe I'll be back to the cars soon.
Here's a repro dash cover that came with the car.