Sorry for the delay, had to find it, unfortunately the article didn't mention specifics, only that 26 A cockpits were used for 13 B.
Years ago I was working on a list myself, but I need to check it, not sure about which are A to C upgrades. The Swedes kept only 100 (but then some attrition deductions occured) at some point, but I need to do some research to see how they broke down in A/B, A upgraded to C, and newbuilds.
The Czech lease examples are pretty easy, their code = the FMS serial minus the first 3.
The EPTS are lend aircraft.
Hungarians should be easy to find, but I didn't have them on my list yet either at the time.
I've got the Thai serials, will post them later.