Don't be too disappointed....you have the heaviest car out there....
If you hook up...you should get 14.60's-14.80's @ about 95
Your getting there....try a shot of nitrous to get you into the 13's.
You can get the 5115 NOS dry kit used for around $200...i just saw one on the classifieds here or stangnet.
I used to have an AOD GT...hardtop though.
It never got faster than 14.40's w/ 3.73's
GT-40 intake, K&N, pullies, and exhaust.
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4.10's,long tubes & 75 shot...Goes 12.50's
Check it out at
http://www.burnouts.webprovider.com