How valuable is your time?
I'm with
@jwin615 on this. Is it probable? barring major supply trace damage, probably. Is it worth the time investment? You're looking at pots filled with FR4 dust and/or copper shavings, which will likely not cease to scratch even after a hefty clean and lube. Bodge wires from signal/supply traces getting severed. The switches are likely okay, but you'll have to do an isopropanol rinse to make sure there's no bridging.
At the end of the day, were it me, I would start over, use your current board to look at how much you'd have to grind out the enclosure or just getting one with actual 1590N1 (125B) dimensions. I don't like waste either, but at this point you're going to be spending a lot of your time for a "probably" as the end result.