I am going to install a 99-00 Si swaybar on my 99 dx hb. I have the swaybar with everything on it as if it were taken right off of the Si. I don't have the two nuts for the endlinks or the two bolts that hold the two brackets in the middle to the rear subframe. Should I get them from Honda or will regular hardware nuts and bolts be fine?

Also on the back of one endlink there is a plastic cover. One of the covers was broken off. Is it still fine to use?