I swear this guy had everything in an old marine hardware store, but the last time I visited, the stock was greatly reduced... and recently the doors have been shut.
I'll have to try further north perhaps.
Oddly I was just in Santa Barbara, and stumbled across a grand old store... open by appointment only. I wasn't in the area long enough.
I may just go with chrome stuff as I think everything will be hidden anyway. I was in the boat today and mocked up my ideas with some cardboard... and realized that I needed to mirror my concept.