The wheels don't move up and down-the chassis does





why did you post an image that is poorly done with the components/brackets in different locations?

And with aprox 3 inch of travel-with the set up / angles at ride height, there will only be 1 .5 up /down for only brief micro seconds of time and the angle changes won't be that severe-also---those momentary changes are what the u-joints purpose are for------