Converting the machine to PAL would also be nice.
If there's a 1 Meg Agnus inside, chances are good that you just need to isolate Agnus' pin 41: insert a thin strip of plastic between the pin and the socket or bend the socket contact.
I've soldered a cable to Agnus and added a switch to ground - closed NTSC, open PAL. Possibly later revs even feature a jumper / solder pad you need to open.
