Sitting around surfing the internet after a recent surgery and I ran across an old Allpar article that talks about installing a Police car gearbox into an older mopar to improve the "slop" in the normal factory gearbox. After looking around even more I say on another site where someone mentioned using a 1989 Dodge Diplomat "police car " gearbox. Has anyone done this? If so is there anything i need to look out for (different fit, different pitman arm)? I am trying to put this on a 72 Dart Swinger.