To replicate the trim I had also thought about having it machined but out of polished stainless and or getting L shaped or U shaped channel stock and bending it to fit.
I liked Larry’s idea of using and modifying OEM brass trim. I started looking into what sizes are available in L or C shaped pieces in brass.
I had contacted Evod Industries about making one as they make very nice wheels, dashes, and other custom parts but it was going to be expensive.