Supported board but unsupported printer

In the process of updating my V-Minion and was going to replace my old skr mini e3 v2 with a RatOS supported board. Both the M4P and Mini E3 V3 are supported, I'm guessing they are for the experimental Prusa support, but they are not supported boards for the V-Minion - https://os.ratrig.com/docs/printers/v-minion. They have more than enough ports, even more when using a tool head board. What's the best way to use one of those boards with the minion, or an unsupported board in ratos like the Pico or M5P? Its easy enough to to change the pin out for the printer.cfg, but what about the initial config of RatOS?
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