The GT had a more plain interior.
The GT didn't have an AUX pod.
The GT wasn't avaliable with the subwoofer option.
The GT has a 45 psi fuel pump
The GT has a slightly different E-pprom than the other two.
The 85 GT came with "Body by Fischer" emblems on the ground effects.
The 86 has a 39 psi fuel pump
The 86 and 87 has the 86 Fiero GT interior
The 86 and 87 are avaliable with the subwoofer as an option.
SOME 86s came with the Aux gage.
The 87 has a 42 psi fuel pump.
The 87 has modernized headlight motors.
The 87 has the Engraved FIERO in the plenum.
All 87 SEs came with the AUX gage.
Thats all I can think of.
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Todd Jaspers
1997 Pontiac GrandAm SE
1987 Pontiac Fiero SE/V6
1984 Pontiac Fiero 2m4 SE
http://www.ezshots.com/album.cgi?82tafiero/Apartment