The MiG-29N/SD (9-12SD) that Malaysia could be a USSR/British (the Commonwealth) squadron aircraft on 13.0/13.3. It equipped with N019ME Topaz radar that accessed the R-77/RVV-AE ARH AAM and could engage 2 targets simultaneously.
MiG-29SD/N 9-12SD is an export version of MiG-29S 9-12S with slightly downgraded N019ME radar with multiple target tracking ability and RVV-AE (R-77 missile) compatibility. And the 9-12S is a post Soviet upgrade for older 9.12 variants incorporating the changes developed for version 9.13S.
In the War Thunder, the MiG-29N/SD 9-12SD should be roughly the same as the three 12.7/13.0 BR MiG-29s in the German/Italian tech tree - except that it is capable of launching R-73s and R-77s, and cannot carry ground-guided weapons beyond Kh-29/KAB-500KR. Considering that the Su-27, which can carry 10 air-to-air missiles with this BR update (4/6 of which are the more capable R-27ER for long-range engagements and a similar level of radar and RWR), has also been moved to 13.0, I don’t think it’s out of the question that the MiG-29N/SD 9-12SD could be moved to 13.0.
If the devs think Air-to-ground Guided Ammo is required, then I suggest Syrian MiG-29SM 9-12S.
Russia helps keep Syria’s MiG-29s flying - IHS Jane’s 360 (archive.org)
Given the current conflict, arguably the most important upgrade is the ability to carry an expanded arsenal of air-to-ground weaponry, including Kh-29T/TE (AS-14 ‘Kedge’) and Kh-31A/P (AS-17 ‘Krypton’) missiles and KAB-500KR guided bombs. Other laser-guided weaponry could also be used by fitting a targeting pod or illuminating the target externally.
While Syrian Mig-29s have been filmed carrying out ground attack missions with guns and unguided rockets, it is unclear if they have been using guided munitions.
The upgrade also enables the aircraft to carry the R-77 (AA-12 ‘Adder’) air-to-air missile, which would pose a threat to foreign aircraft that may intervene in the conflict. MiG-29s have already been spotted in Syria carrying the AKU-170E rails required to launch the R-77, indicating Syria also has the missiles.>
As well as 9-12SD, 9-12SM’s BR could be 13.0 or 13.3.