Don't know what year your car is, but if it is older I would replace the top boots before you go thru the whole replacement thing. With age they crack and even will allow the strut rod to poke thru and can break the rear window. You can get new out of Calk $91.00 each kit or go to Planet6 and get some good used ones.
SPOC NE web site: http://www.spocne.org
