This image shows how the metal retainer is captured in the weather strip. It is not necessary to replicate this when installing new weather strip, but shown for reference. The profile is the same or very similar to that which is used on the side of the door.
The 55th type, 465040, is rectangularish and thinner, instead of having the distinct trapezoidal shape, since it attaches with one bolt at the bottom instead of two. .
This carriage bolt has a flatter than normal head for appearance reasons. It has a crimped stainless steel sheet over the actual structural head underneath. .
The washers are effectively a combination internal tooth lock washer and fender washer. If using self-locking nuts, a normal fender washer may be substituted. I cannot find the bumper shim in the parts book anywhere, but they are used 51 to 56 on the rear bumpers, between the bumper supports and the bumper itself.
The working dimension of each clip, shown as positioned vertically in the photo, is 1-1/32". The left clip, 469005, may be made from a generic cut-to-size type clip. The middle clip, universal ones are available for approximately a 1" breadth.