I agree 69 to at least 71 the front ends are different.Just try and find an Idler arm for a 70 71 Imp.One guy bought one on the 70 Imps that I had just for the Idler and some other parts for his 71.New idler arm was 500 bucks.Lots more than a normal C body.I owned like 6 Imperial and the 66 was probally my favorite.It was total black and looked like a funeral car.Rocky