Swaping bench for buckets

Did the same thing with mine on a 68 Dart. Dart , Cuda pretty much the same on the inside. Should be 4 small squares on the floor from the factory. should be there. If you can't find them and you have your seats ,mock them up. I would put the glides all the way back, place the seat and see cif it fits. Are you using a consel also ? I have pictures if that will help.