the rear reflectors measure about 4.5 inches wide and about 1.5 inches high, with a little to spare height wise.
and all fieros use the same ones.
let me know. Also, someone told me they got some housings off an older Cadillac... I want to say 70's era Eldorado?
I don't know I'll take a look, right now and update after.
EDIT: I forgot to mention, the oe housings from this mystery vehicle are rectangular/boxlike, and will sit in the recessed area where the reflectors would go. the lenses are removable via a screws that hold them to the housings.
ALSO, the 70's Eldorado housings look similar, the 80-90's caddies' backup light housings look eerily similar to a fiero's front turn signal housings...
[This message has been edited by AL87 (edited 09-30-2014).]