Thanks to all for the info. The spreadsheets and, especially, the RMJ roster from 1999 did the trick. It looks like RC once did the car I have settled on (MP 36000 Series), but of course, I have an undec and will able to finish it up myself. Need to gather the supplies, but I am on my way!
BTW, it seems like the old RMJ mags are more valuable than ever. I have the indexes that they once published, but they are not complete. Nevertheless, those "Car Spotters Guides" were great!
S