After a long time... excuse me digging out things and countries of minor importance (especially needing formation changes), but I've found an article on a modernization of Hungarian army in Polish magazine from 2020. You can ignore it as well, since Hungary wasn't involved in any conflict (although Orban would gladly take a part of Ukraine, if his Russia wins...)
39 2S1 Gvozdika - it shows, that they were withdrawn in 2004, and Hungary remained without SP artillery at all, until an advent of PzH-2000!
Moreover, WWII-era 122 mm howitzers M38 (
175 122mm Section) were also gone by that date (no strange), leaving Hungary without units class 155 O/M medium artillery - only 152 mm howitzers D-20 remained (unit 177)
Edit:
Obviously, same for
091 122mm Field Gun (M38 howitzer) and
174 122mm Section (2S1)
64 BMP-1 - this unit is available in 1969-73, but they were delivered from 1973 only (next unit is 032 from 1/74).
Needs no change in formation, since there is BTR-50.
65 BMP-1 - withdrawn in 2007 (stored for some time afterwards), leaving Hungary without tracked APC/IFV, only BTR-80/A, until an advent of Lynx!
403,404 BMP-1 (scout vehicle) - the same - used in 1973-2007 (there is still left UAZ-469 until 125 in this class).
Units 403, 404 as scout vehicles were in fact
BRM-1K, bought by Hungary according to the newer article. BRM-1K should have radar (TI/GSR 40), laser RF, photo 11488 and carry capacity 105 at best, like Soviet BRM-1K (in fact it had places for only 2 scouts, but carries unit 303 Scouts in Hungarian OOB, so...)
(BTW: speaking of scout variants of BMP-1,
Polish OOB 403 BWR-1S Svatava and
Czech OOB 404 BPzV Svatava should also have laser RF)
55 OT-64A - I have no firm info, when (and if) Hungary used OT-64 SKOT. Hungarian Wikipedia doesn't help. Anyway, surely there weren't any in 2007 (now 125).
(BTW: it is strange to me, why 408 BTR-60PB is available until 12/073 only, but I have no info)
Edit: more info as for OT-64 and BTR-60 below
66 PSzH-IV (light APC) - gone by 2020 or before (now 125). Needs change in form. 78, 90, as the only unit of that class
238 PSzH-IV (light support APC) - the same. No formation change needed (remains BTR-80).
(My guess is, that it could have been used also as a scout vehicle).
Edit:
According to Hungarian Internet, especially
https://web.archive.org/web/20130609...ncelosok/pszh/, the name was just PSzH (even written as PSZH, despite "Sz" was a short of one word "szállító"), and PSzH-IV was just an export designation. According to the quoted page (of 2006), they were withdrawn "towards the end of the 90s".
By 11/23 Hungary acquired first two NASAMS SAM (from Norwegian OOB) (1/24 as a starting date?)