It shouldn't matter much what the price of a Fiero would be in 2017 dollars because they are no longer sold and use old technology. They also don't drive like a new car. As for used prices they are all over the place but when pricing a Fiero things like new paint, upholstery, engine work and wheels should be considered.
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman 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 "