Seat tracks

I have a pair of seats from a Plymouth Lazer that I had reupholstered to match the rear seat of my 1970 Duster. Those seats have their own tracks that function perfectly. However, they do sit very close to the floor. I have a pair of OEM bucket seat tracks for the Duster, but I don't know how to attach the seats to those tracks. If I were to do that, the seats would have 2 adjustments, which I obviously don't need. Is there a better way of installing these seats. I'm a tall guy (6'7"), but I don't want to be sitting on the floor just to drive this car.
Any tips or ideas will be greatly appreciated!!!
Thanks in advance!