Hello, I have cleaned my garage and I have found coil over suspension. I bought the suspension several years ago and I think they come from a Honda Civic (but I am not 100% sure) in order to mofify them to go on my fiero 3800SC (which I have sold).
Here is some information on how to change your suspension.
http://www.fiero.nl/forum/Forum2/HTML/046456.htmlSo they are now for sale (sets of 4 and will not separately). No idea how much it is worth. Therefore send me a PM with your offer.
Thanks