[70oldsW30]

It would be a concatenation of the series and body style - except the series as a number doesn't apply in 1972 so, I can't guess where he got them for a '72 VIN. You could try to use them as they applied to earlier year models but that would be indeterminate. Also, the 00 in 3600 isn't right and doesn't match for the body styles listed in '72. The 87 in F87 (from his VIN) would be the same 87 in 3287 - meaning 2door hardtop coupe. So, what's a 00? In my little experience it is how literature referred to the 36 series car without regard to the entire range of possibilites of body style.

Doing a quick sanity check, though, I've never heard of a 1972 F-85 or, at least, nothing that was actually badged as such. But, then again, I've killed a whole lot of brain cells over the past 30 years since I've been messing with the things so there's no telling what I've forgotten. I don't have a '72 service manual at home so maybe someone that does, or maybe just someone that has this all in their head, will drop by. I have marginal faith, at best, in web references.