According to the other posts I've seen it looks like if you're doing bulbs you'll need:
8 (+/- 2) size 74 bulbs for the Instrument Panel
1 (+/-1) size 74 bulbs for the Keyring
2 (+/-2) size 194 bulbs for the HVAC
As for the stereo/CD changer - I'm not sure... I'd like to do all the lighting with either bulbs or condoms, just to try to keep consistent lighting. Any guesses on the size of the stereo bulbs? I'll try to search some more....