Replace bench seat with aftermarket buckets?

I have a '70 Duster 340 with a bench seat. The bench was recovered before I got the car, but the original head rests were not reinstalled (they're in ruff shape). I love the bucket seats that came with the '72 Challenger I used to have, but I am wanting something aftermarket that may be similar. Also, do the aftermarket seats have front to back adjustment in the mounting? Any thoughts appreciated.