upper and lower mounting points. I had my door panels reupholstered to cover up the holes. much better in my opinion. the only negative I have encountered is my seat belt light is on unless both seat belts are buckled. fairly easy swap. I despised the door mounted ones although most people on here seem to like them. [ http://twinturbo.net/nissan/300zx/forums/technical/view/1001369/94-style-seatbelt-install-guide.html ]
