I used these before, no problem! Clean with brake cleaner or acetone. Don't forget original screws! You can reuse SUBARU bolts, but SKIP the stretching part, don't trust the 90Β° and 90Β° tightening angle, but if you do, make sure you get about 65 ft lbs on all the bolts after the tightening angle nonsense. You'll be glad you did because you'll easily find loose screws!