Originally Posted by grandpawmoses

There is an installation guide packed with the struts. But to answer your question, the new brackets do attach under two nuts. The guide says to take one nut off at a time but you have to loosen both nuts. I took both nuts off (the third nut keeps everything aligned).
Operation is great and alignment is perfect.
FYI, the little spring clips were loose in my box and I was convinced I didn't get them until I found them where I opened the box. They are tiny so watch for them.