Help w/ Converting Bikes from IV to V

[baneofpoo2]

i could use some help on converting gta 4 bikes to gta 5 i am trying to convert an ATV but i dont know if bikes and atv's use the same zmodeler type thingy and i cant find a tutorial for bikes on youtube i already have the model i already turned it into a file i can use in Zmodeler3 but i need some help with figuring out how to do any of the rest