i wrote these a long time ago for my orks. i only made one rokk model so i never used it. but heres the rules
ork rokk: 150 pts
weapons: none
armor: F10 S10 R10, open topped, immobile
capacity: 30 orks, 6 killa kanz, or 3 deff dredz (grot units cant ride inside one, theyre too scared)
scatters 3d6, but never direct hits. use the arrow on the direct hit for direction if it does hit
the rokk works like a drop pod, in that it doesnt roll on the mishap chart when it hits a unit, it stops just like a drop pod. once it arrives, the unit inside takes d6 wounds, immediately disembarks and takes a pinning test. if the unit passes the test, it may not move but may assault.