Using a custom model as an Actor Blueprint?

I’m following a basic vehicle and suspension tutorial. I have a flattened cube as the actor with 4 wheels as suspension, If I wanted to use a self made model how would I replace the cube with my own model? I hope that makes sense. Following this tut:

You would first create the model, then rig it appropriately.
If you aren’t using the adv. techniques, then really all you need in essence is the Root bone, and the 4 wheel bones.

Once you export the FBX and import it to the engine as skeletal, you can then replace or create a new BP for the vehicle.

I see, thanks.