Since the 3800 engines are now old tech and somewhat heavy, IMO the next logical swap would be the GM LFX engine. All aluminum, lightweight and 300-325 HP stock. A swap hasn't been successfully completed in a Fiero as yet but they are in the works. The engine was widely used on many GM models and low miles engines from wrecks should be available. After all the bugs are worked out I may just attempt that swap. I just don't like being the first!
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" 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, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "