To clear the 1-1/2" spacers in the link, you have to trim about 1/2" strip of metal front the backside edge on the upper control arm. This
Pic shows the piece of metal that has to be cut away for clearance. I tried to install them w/o cutting trimming the area, and the spacers wouldn't lie flat. IIRC, I just made two cuts and bent the metal back enough for the spacer to clear.
