I would try the board out in my Lost World, but it's a project that I'm in the middle of completing, and I don't think it will be anywhere close to ready for another 4 months or so...
I haven't been able to find much information about the interchangeability of these older -32 and -50 boards with the newer sound boards, aside from a lot of people wondering if it's possible. I know that these older games used a different PROM, but there are ROM files available for using 2716 chips, so I am looking forward to seeing how this turns out.
Like decimal said above, you're doing some great work here! I will also stay tuned.