What size tires do you have on them? Chances are that you don't have nearly enough lateral support for them - you might well be below the minimum recommended width for your tire size - and steering response is bound to suffer as a result. Not that you really want steering that's responsive to the point of being "twitchy" at 120+ with the throttle matted . . .
Do you know what your alignment specs are with these wheels mounted? It might have shifted a little, and an alignment optimized for the dragstrip won't be the same as Ford's preferred specs anyway.
What offset are they? Significantly changing the offset can and will affect steering feel.
A 3.75" wide rim is even narrower than what came on the 1400# Austin Healey Sprites of 50 years ago (4", with 145 tires). You've got about half again as much weight as that whole car on just your front two tires.
Drag racing is a highly specialized use of your car, and when you start doing these little "percentage plays" to improve that performance, you do start sacrificing other things.
Norm