Is it possible to put helmets on AddOn Peds?

[Renciss]

Hi, sorry if i bother someone with this question, i've been trying to "attach" a helmet (one of the p_head_000...files) to one of my stream peds.
I'm using addonpeds from meth0d of course and i already did a lot of matches with models and textures but i cant seem to put any helmet or "prop" into the addon peds....
anyone know something?

Thanks!