If it has a V6, it should be the 3.4 liter version, that's so popular with Fiero owners for engine swaps. The 3.4 V6 in the F-Body is easy to tell, by the big Y-shaped intake manifold. See photo below.http://carphotos.cardomain....1043900016_large.jpg
One point of concern will be the T-top seals. Also, the headlights on that body style are pretty weak. If you buy the car, look into higher-powered headlight bulbs and/or driving lights, if it doesn't have them already.