I had a 86 GT, and pulling those panels off is a royal pain. It uses thin wood that the vinyl panels mount to that breaks easily. They are attached by those one way fasteners around the edges that if you are not careful, they will pull right through that wood.

You need to use one of those "fork" type removers.
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2006 GT Tungsten Grey 5 spd, Xcal2/Pipeline CAI, Powerhouse tune. Spoiler delete. Front Speakers:Infinity 6812CF;Blaupunkt GTc652. Rear:Infinity Kappa 682.7CF. H/U:Alpine CDA-9885. Alpine MRP-F250 amp. Sequentials. President of the Splash guard registry. On Deck: Motoblue UDP's.