Get yourself the:
19Pcs Trim Removal Tool,Car Panel Door Audio Trim Removal Tool Kit, Auto Clip Pliers Fastener Remover Pry Tool Set with Storage BagJ moulding on the back have two small sheet nuts to remove. Think 7/16. The quarter panel trim pry off with the tools. Careful and try and save the clips that hold these and the longer piece connects to the short one with a sleeve. Over the door the ends remove by a small nut and the rest pry off and you will most likely need to buy new clips at Mega Parts. Same goes with the two sections on the front fenders again held together with a sleeve. All this is shown on the 66 Charger Service Manual Supplement p24.