Front Seat Issues

I have what appears to be the original bench seat in my Demon. While it has been recovered, I feel like I'm sitting in a high chair. I'm 5'11". Headroom is non existent and the steering wheel is in my lap even with the seat fully rearward. The front edge of the seat is 11" from the floorboard. Is this normal in a base model Dart/Demon? I've seen pics of other A-body seats and they don't seem to sit as high as mine. Would original or aftermarket buckets solve this problem?