This is not, despite provisions for mounting HMD, it is not currently used on them. This HMD never made it to production. JHMCS doesn’t appear to work, and Shimadzu is still developing their newer gen HMD.
Anyways, something i was about to say, before i found this major revolation of the F-2 having an HMD tested, was a smaller revelation. The direction finding RWR system tested on 63-8502, does not, as we previously believed, require physical modification. According to TRDI60 it was designed to use existing F-2 hardware. With the extra stuff being for testing. Meaning that in theory any F-2 could potentially use the direction finding RWR function (although i high doubt it was actually rolled out to additional units IRL).
the ones im aware of is the HMD used on the F-15J(M) used on the F-2, I think this is the recent upgrade. However I am aware it has said HMD (F-15MJ’s one)