I have a 93 240 with the 20mm kit from H&R. I had problems with the studs they supplied. They never fit as tightly as they should have (you could wiggle them around when they were installed) I ended up having studs from Nismo overnited and they fit like a glove. I contacted H&R about the problem and had a long chat with an engineer there detailing the problem. Hopefully you will not run into the problems that I did. The spacers themselves are very nice pieces and I haven't had any problems since the install. Good luck man.

Ryan