Thanks for your input.
The struts are the EXcel-G struts from KYB. The front struts have the same number for the Capri as the Mazda 323, and the back are referenced from the Mazda 323 since the Capri rear struts are not listed.
I was worried a bit about the rubber insulators located on either side of the springs. Of course my are old and brittle. The Mazda insulators (rear strut, bottom of spring) did not feel so very thick or protective as I thought they might. That is a concern. There is a place 30 miles from here which makes polyurethane isolators which would be the best you can find. I might (might) see if I can find an isolator from them. The company is called Energy Suspension. They have a website.
If anyone can tell me the dimension of the spring (width out side the spring, and inside the spring, and height of bottom coil) maybe we all can order a set of top of the line insulators, and know a stock number to use. These insulators are fitted very well. Hell, if I had an extra spring, I would take the strut and spring to their shop and find the exact fit, send the info to Russ, and let Russ supply the insulators as a dealer. Win, win for everyone.