Should had 85mph speedo and everything bounces light at sides.
Speedo doesn't mater but many V6 had extra gauge pod over center AC and all back lighted and all have V6 tach
if they didn't cut or repin the plugs, find a 85-88 4 cyl set is likely far less work.
May have repin the plugs so need to check each wire goes to whatever pin Before you plug into an OE cluster. If 1 pin is in the wrong place can easily fry 1 part or the whole thing.
some notes you might find handy...http://www.fiero.nl/forum/Forum2/HTML/138175.html
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
The Ogre's Fiero Cave