Hmmm....On my AOTCR map, I added a banshee after the BSP was in. I didn't find adding the vehicle itself to be hard but finding room for all the Fuel Rod meta and dependency metas was hard(this was before HHT4 so I couldn't just add new tags). But, I got it working(although not all of the dependencies are the same as they are on the Banshee in SP, it really looks the same as it does in SP(I know what a few of the differences but if no one else sees them, why should I point them out

?)
Anyway, I am really not used to HHT for raw data injection. I can't seem to get it to inject right after the first raw data injection(It always freezes in game if I try to use whatever I injected; I.E. a weapon's projectile has a sound that was injected with HHT. It freezes when the sound plays.) So, I use good old Xinject. I probably am doing something wrong but IDK what. I prefer to stick with what works and only go looking at other things when it won't work(or I can do something totally new).