87 GT Doesn't have:mine weighed in at 3180. car has aluminum heads, aluminum driveshaft, tremec(50#s heavier than a stock t5), subframe conectors and 17" bullitts.
Just for comparison my buddies completely stock 87 GT w/ turbine wheels and a 5-speed weighed 3140 on the same scale.
I have no idea how mine is heavier. Maybe the safety beams and such are bigger in a 93 than a 87??