Adding Vehicles to Spawn Menu

[mayhemflee]

I was able to successfully add the Ifrit and Strider to spawn on my server (I found them using map esp) but for some reason I do not see them on the Land section of the spawn menu. Is there anyway to add them onto there? Anything in the configs? 

[Gravy]

Is anyone going to answer this question, because I'd like to know how aswell

[howitzer]

Not without modifying the server pbo.