If the units are sealed, they should be in working order. IIRC the GM Harrison compressors did come in a black color and also in a silver color. Delphi only came in silver. The close up of the pulley side shows that this compressor was already mounted (look at the mounting tab) and I am also not sure if its a unit that fits the Fiero. For $225, I would avoid buying this unit.
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Powerlog manifold, Northstar TB, LS1 MAF, 3" Flotech Afterburner Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "