Heh, I've done that a few times.. Made a ARII-Rev1 into a 2. Had a few REV2s that had huge burn holes, so not worth trying to fix.. Also, a cool trick i learned from Bob Roberts.. Take an ARII-Rev1 and put it on a band or chop saw.. Cut off the unpopulated side, leave enough space for screw holes.. Now you have a Asteroids Deluxe AR pcb.. As AD uses the large 4700 speaker caps..
Great trick if you have a bunch of ARII-Rev1s, as there are a lot of dead pole positions out there.. So lots of ARII-rev1s!!