Welcome to cuda-challenger.com judge! Great place here!! I'm sure all the members will help out all they can. I guess you just need to ask for what you need and someone usually has the answer. Here's a pic of my 73 but its no survivor. The 72 and 73 were similar with few changes, but a couple I cna think of would be: 1) larger bumper guards 2) In 73 the engines were balanced externally. In 74 the engine went to the 360 and the seatbelts were redesigned. I'm sure there's more but pretty standard from there on out. Hope you enjoy the site!!