not ALL gt's are 8.8 i don't think they changed them all to 8.8 till 86 or so?
i have an 84 with a 7.5..
if you go to summit online catalogue, they show gaskets of the rear diff bolt pattern..
the 7.5 is oval and the 8.8 is more round..
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91 LX 'work in progress'
previous stangs;
lightly modded 84GT
81 2.3 converted to 302 auto
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