Dont really know the frame layout of your Dodge, but it really depends what you want to do with it. I am taking it that you want to go with a GM drivetrain. In that case, the Camaros that you are looking for is a 74-81. They will have the disk brakes, rear end and v8 that you are looking for. Other possibilities are the "G" body GMs, which are the 78-87 Malibus, Monte Carlos etc. On them, you would cut the frame of and graft it to yours. Generally, doing it this way is cheaper than a Mustang 11 type of front suspension. However, if you have to rebuild all the components, it can cost just as much.

Another advantage of the M11 systems is the rack and pinion steering.

Like I said....depends what you want to do....and what will fit your Dodge the best.