If you look on the GMG ID line, and Freelancer ID line, kusari tech is a white box on both.
So I make another request to use this kusari tech with my Freelancer ID.
Yes that is a workable combination, now the next step is to ask the factions about using them. Since it is clear that you haven't researched, I suggest you read up a little bit on the NPC lore concerning the factions you wish to approach before doing so. At least you brought it up here before flying around in a GMG ship with a Corsair loadout, good start.
According to Dusty, Disinfectors and Sunfrenzies are considered Kusari Civilian - it's one of the last posts in the tech chart discussion topic in the Rules forum.