the black rings are for adjustable camber/caster plates that you can move in any direction to do alignment. they also have urethane inserts so they are not rock hard like racing adjustable plates. came from bmp. car is original to me sheetmetal with no rust repair due to 10 years in palm desert and low 65k miles, but it has been in an accident before me and has new nose (that why i included a pic of the front left frame rail to show where i straightened it a little) and qt panel and new bumpers and grills and assorted accident parts which is good for me but the quality of repair was not perfect and i just have to live with that and hide it to the best of my ability