need to know name/part # and where to get them

It mounts to the bottom of this bracket which it attached to the upper control arm:

It was rust city inside of there when i took it out and you cant even tell that the bolt and nut were separate. I am wanting to put my new QA1 in and control arms and couldn't get the mount off to i might as well buy new ones.
I also need help with the install of my front springs, cups and QA1s. i bought the used with no instructions on anything. Thanks a lot. Here is a pic of what i have:






