Most of us who have Fieros with sunroofs have experienced a leak at some time or other, if the car has been rained on or washed. Here's how to put drains into your roof if your car doesn't have them, and also a locator to clean out drain holes that may already be there.
I can't get it to post as a PIP image nor as a text, so you'll have to open the Word Document attachment. Sorry.