How can I change the height of Hinge Joint for my car game?,How to change the height of the hinge joint for my car game?

I am working 3d game which has a different mechanism for car but I don't know to achieve this. In this there is a hing joint in the center of the two bodies which moves up and down on button press.

Same as on this video from 2:55 : https://www.youtube.com/watch?v=MwHHErfX9hI&list=WL∈dex=8&t=260s

I tried using all types of joint but nothing worked but hinge joint was the closest. But in hinge joint I cant set a specific angle between the two bodies. I am totally blank right now! Is there any way to achieve this. Any help will be appreciated. Thanks in advance.