Haven't done one in a few years but I recall there was a way to get the sail panels off from outside the car by using only a long screwdriver. I did a few this way with good results.
UPDATE: Now I recall. This was done on my first Fiero, a 1985 GT. What I did was to use a long screwdriver to get behind the sail panel and pried the panel away from the clip that was attached to the center bolt. After that it was just a matter of getting the rear two clips unhooked. Put the new sail panel w frame back in the same way and all stayed together.
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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 " [This message has been edited by Dennis LaGrua (edited 12-12-2019).]