I sold mine in 66, but I think it is like later models with an H shaped weatherstrip , the molding was held in with clips over weld studs.... to prevent damage to paint you can apply a strip of masking tape. then use a putty knife, about1 inch wide works for me . start on the body metal side and pry a little to see where the clip is located and pry up gently, Usually start at the end of the overlap piece.. the first clip is usually a couple of inches from the joint. sometimes you have to work 2 spots at a time. If you have a pick your own part wrecking yard go and practice . some of the clips are different collors. have different shapes for different size moldings. If you break the weld studs the factory repair was to use a small drill point screw near the location. Screws used for metal wall studs work pretty good, pan head style.