right now then a freind came to see me tonight and he has really bad camber on his rear wheel so we jacked up his car and we have seen this: (hopewilliamsvts doesn't mind me stealing/editing his pic)

this plate was sheered where the red line is. could this be causing the camber/knocking noise?
if so how big a job is it? or how should it be sorted?
thanks

this plate was sheered where the red line is. could this be causing the camber/knocking noise?
if so how big a job is it? or how should it be sorted?
thanks