wes.
The t has a spoiler on the rear decklid and different wheels as well as the Super HICAs 4 wheel steering.
The "a" has an active suspension that was a much more expensive option than the "t" trim.
It prevents 95% of squat, dive and lean giving the car a more controlled feel than even the "t" version ( which was intended to be a bit of a sport version also).
But the "a" has none of the showy "t" stuff, as the expense of this option when new (an extra $4500 in 1994!), was thought to make it popular with luxury leaning buyers and their wallets.
The "a" suspension is very sophisticated and its equal is only available in newer $90,000 Mercedes'.
Fred..
