Thanks for the tip, I'll ask him!
UPDATE: Peugeot Boxers have been replaced with police and military BRDMs, while the ZU23 can be downloaded from OFP.info. Rellikki told me they might be able to host the police Cessna + Skoda Rapid on ofp.gamepark, but I haven't come around yet to send him the stuff, I'll do it tonight. I also give another playthrough for the campaign to make sure nothing went awry, then upload it with the list of changes. Hopefully, I can do this tonight, too.