Custom gauge cluster?

Whatever you do will probably be expensive to have done. You can do a lot of customizing with the type of plastic used on the dash bezels, but it's labor intensive.

To make a custom center console, I cut the gauge rings off '64 dash, machined a groove into the back side to fit aftermarket gauges, and then had them rechromed. The rings also had a couple of damaged spots, so I melted scrap plastic with acetone and made a paste to fill the chipped area, then sanded it. The result is custom gauges that look almost OEM, but it was a lot of work.

I imagine you could do something similar using parts and pieces from another '65 bezel, or another dash that's closer to what you want, but as you've discovered, finding a talented person to take on the project isn't easy...and it won't be cheap.

BTW, that's the first time I've seen that company and I love the vintage look of their products. I already picked out a set for my '56 Plymouth.