ok so i was a little confused at first, i also thought you had the 3.73's in there.
basically your times arent bad, i was exactly where you were, i had 2.4 60ft times though (check sig)
but with your mods it seems like you have more horsepower than i did because if your times were posted right, going from a 10.5 1/8th to a 15.6 1/4 looks good, to me it seems like you just bogged out of the hole, especially with that 2.7 60, work on the launch and maybe get some slicks or drag radials, it wouldnt hurt... besides, you have a built fricken trans and gears going in, better tires would be a must haha

now, the a/c delete seems pointless to me, it isnt helping any except for the loss of weight from removing it all. the a/c compressor is not hurting the drag on your accessory drive. it works on an electromagnetic clutch, its just like having a free spinning pulley on there. the intake could work better if you got a bigger throttle body and mass air meter to match the throttle body size and injector size. (there are MAFs that are tuned for 19 or 24lb injectors) but if you still have the stock MAF on there, it is restricting your intake setup because the stock size is like 55 or 58mm, im not sure exactly. and that adj fuel pressure reg is nice... for controlling pressure when you have bigger injectors or a high flow fuel pump... but from reading the mods in your sig, it isnt doing anything but looking pretty. the e303 is a good cam once you have better springs and 1.7 roller rockers... it really didnt change anything but your powerband moved up, stock cam has a .444 lift and that e303 has a .498, im not knocking it at all because i was looking to get it... i just figure i'll save my money for a custom grind. your exhaust is really the only thing that isnt restricted from its full potential right now.

im not trying to knock your setup, it just needs a little help right now to be working fluently. get the 3.73's and that built tranny in there and you will see the biggest difference in times as of now... BTW, the stock time for a 1991 GT is 15.6, that is straight from albeedigital.com

all of my post is going off of info i was provided by YOU, i mean no disrespect, your future looks good to me =D

 

so how you figure that??
your reaction counts for somthin

 

yea if your racing somebody,but the timer doesn't start until the wheels break the laser

 

That's correct. Reaction times may determine if you win or lose if your opponent runs the same time as you. He who leaves first will get to the other end first. It has nothing to do with what the car will run.
The 2.7 60ft times are killing you. My 5-speed stock would 60ft about 2.35 to 2.40 slipping the clutch to keep from frying the OEM Goodyear Gatorbacks.
My car weighed 3180 stock with me in it back then, it weighed 3360. (I'm 25lbs heavier now ) It ran 9.05 in the 1/8 mile. I don't remember the mph right off.
With only 3.55 gears, K&N drop in, OR H-pipe and 40 series Flowmasters on worn slicks it ran 8.40. Added a 100hp wet NOS kit and it went 7.96 @ 86.9mpg in the 1/8 mile with a 1.72 60ft.
If you don't have the gears yet, I would go 4.10 with the AOD. You mentioned a new converter, that will help too. Just getting your 60ft time down to 2.00 will put you at about 14.9 sec.

 

for sure, i was also told to get the 4.10's and glad i did, im at a 2.1 60 ft, with worn out goodyear eagles and I run 14.9s all day