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