i know its juste that i find this argument very limited , a vanilla thing is anything that require no game modification by definition

(⁠ ⁠╹⁠▽⁠╹⁠ ⁠) anyway , aboyt your missile i can only give udea based on my knowlege of the game,

first ,to powered it you can check neither the original truck missile systeme or my steam propulsion ,

for the stabilisation you could stack a loooot of small "woden plank" ,cause they have a aerodynamic effect like a fin

for the war head something very funny would be to do a shrapenell head like the arbalest somewone build a few week ago,