Tha upper shock mount/supports are adjustable up and down by 1/2", I also have a tall and a short version...to provide ride height adjustment of appx 2''. The mounts attach to the inner part of the shock tower utlizing the stock upper hole and a 1/2" hole (per side) drilled into the lower shock tower assemby. The coilover mounts provide excellent support to the factory shock tower and are a great attaching point for anyone wishing to add additional reinforcing in the shock mount without welding to the actual (painted area) car