i installed tein springs and used my stock struts(for now). everything was going along easily until i broke a bolt in the rear lower control arm. i then had to take the control arm out and drill the bolt out(was a real bit**). make sure to use liquid wrench or something along those lines to loosen up the bolts the night before you do it. If all bolts come out with ease the swap should be complete in about an hour and a half. use air tools if you have them helps a ton. you might have to use a spring compressor if you need any hardware off of your old struts(ex. bushings, washers, etc.) if not the really isnt any need for a spring comressor unless you cant get your new spring son your new struts. but good luck witht he bolts.