I think you'd need an upscan converter to turn the pcb's 15kHz signal to 31kHz.
After that you essentially just need to get power to the pcb and hook your controls up to it.
IIRC there is a page floating around with a guide on doing just this, that is building your own supergun. Didn't look too tough when I had a look (but haven't done it myself).
Google and see what comes up. Good luck!