If you're installing like me on a 1st generation Tacoma with the retainer ring set to maximum height, you'll find that screwing the bottom of the strut is difficult if not impossible. align manually. You can attach a wrench to the swingarm, put a tube on the wrench for leverage, and use a helper or weight to push the swingarm down to line things up for screw insertion, and then use a screwdriver and a hammer knock on the screw through.