Ya I always have to look up how the mounts go. I can never remember from one engine to another. (which only has happened twice for me. dozens of Mopars throughout decades) I replaced the 383 in my 69 RoadRunner and now that I look back I bet the timing chain went out. I picked up a low mine 383 out of a Chrysler Newport and swapped it out and put in a Crane Fireball cam. It ran real good.