Setting up vehicle mesh in UE

I am working on a personal project and I really didn’t want to have to model and rig my own money truck so I ripped one from GTA V cause its fully rigged and modeled for what I need.

These are the images of that in 3DS Max, I don’t know how I would properly set this up in UE5, I have tried so many times but keep giving up because I can’t figure it out and every tutorial I see only has a chassis and 4 wheels but no rigged doors and windows etc. which I kind of want.

The furthest I got was setting up the physics but that was just a disaster, it wasnt creating bodies for my wheels, the bodies werent working or non existent etc.