4 Bushings (on vert), two on each arm. 1 is u shaped, the other is a doughnut.
I went looking for a picture and cound this one...
http://www.mazdatrix.com/rmounts.htm
I said two on each arm, but aparently, one of the 'two' is a two peice job. They say it is a bear to get the old bushings off. I don't remember it to be a PITA job. But then again my memory of this job is not fresh.
This is the kit I purchased...
http://www.nopionline.com/nopistore/...ZDA%20RX7&vn=0