If you do a flea-pay search look for Belt Trim or molding of appropriate year Mercury. The 3/4" spring clips should come up. Now if its lower door trim then look for that.
A lot of the late type replacement stuff is bolt on so that would be difficult if not impossible for belt trim pieces. The door trim pieces only have a few bolt on clips but they are located where you can get to them and there are only a few of them per side.
the rubber dot pcs are not shown..however in a box on a shelf..ALSO I have new door sills for 49/51 merc and an almost perfect hood can del that next week at charlotte meet