pak zil has:
their wheels
their bodies, trailers
their cargoes
their textures
different animations

zis / zil - 585 has 6 of its addons. by ronnie.
zis / zil - 164 has 7 of its addons. authors: ronnie, soul reaver.
zis / zil - 151 has 6 of its addons. authors: maxim gordeev, anton smirnov; vital yantz; driver-51rus; du-mont, ha3ap.

thanks to the creators of bodies, trailers, wheels, weights and textures.