Yes, I've replaced the stock wheels on my '69 and ex-'71 Spiders with both Campagnolo and Chromodora turbine-style mags. Yes, the studs have to be replaced with longer ones. I replaced the left sided studs with the right-handed ones, so they will all use the same nuts. However, make sure that no one tries to remove the left side wheels by turning the nuts clockwise, or you might have abroken stud on your hands. If you keep a spare tire on the stock steel wheel, make sure you keep the original lug nuts to use with it; the mag-style lug nuts will not seat all the way on the longer studs.