Hitboxes are a even lower poly model which totaly contains the higher poly model for collision detection. I dunno why this to this date isn’t fully automated.
ini means initialisation and is a hint that this old game uses a cumberson file format. I think these hiRes Texutres Packs for all the old games are really nice. bang for the buck.
Looks like FreeSpace 2 Open could run that model (or even the original game). In that game the sub-models determined the hit-boxes for the various turrets. Stats were in a text file all packeged in a .VP ‘container’ which was a Volution propitiatory format (a bit like .esp is today for Skyrim and Fallout) The LOD (Level Of Distance) models were simply made by decimating the original model.
What game is it for. Anyone who gets the job will need to know, the process of modding is very game engine dependent.