There was already a set of Headman's in my Dart Sport when I bought it. They are hammered pretty hard to clear the power steering.
I would say whatever you do, don't buy those.
I just installed Hedmans in my dart with a 318 and power steering and only had to clearance the no 1 cylinder down tube about 1/8 inch because it barely contacted the power steering mount bolt closest to the motor.
I have a cable shift on the floor in mine, but the Hedman installation instructions said/showed how a column shifter linkage had to be modified.
Looked like a pain in the butt.