A photograph of your damaged panel would be of value to evaluate repair options
The late gauge panels were a one piece plastic that included a chrome-plated perimeter portion. I am unaware if any vendor is reproducing this panel, and, of course, the chrome plating is prone to deterioration over the years.
The early panels, as Julian noted, were vinyl covered metal with a separate chromed, brass channel perimeter trim.
and yes, I modified an aftermarket horizontal gauge panel to fit my early console. The early/late center consoles differed in style and dimensions. I then collected a bunch of the early chromed brass trim, had it TIG welded and chromed to create this:
