I have 2 arms 1 from a 71 Dart and 1 from a 72 Dart. They are exactly the same. I tried sliding the KD up until it could go no farther , but that was not enough, still would need about 3/8". The B&M info has the pivot on top of the arm,which needs more room. With the KD flat which would be real close the arm would probably hit the floor at the top of its arc. Mine is a 62 Lancer and the throttle pedal mount is right there. I did a lot of searching in forums and on Google and cant find anyone who has had this problem. Might call B&M this week. this is all I have left to take her for 1st ride...