I made this helmet in order to replace the simple ones on this beautiful skin made by ToumaYanagi:
https://www.digitalcombatsimulator.com/en/files/3329450/
Although there's 1 helmet file and 1 NRM map, there are 2 RoughMet files, one work for the Pilot, the other for the RIO. They have minor differences related to illumination. You will find the "lua file" for ToumaYanagi skin too, adapted to this helmet. Simply replace it.
You also can use these helmets with other F-14 skins ...