I have no experience with those on Roadster Pickups, but assume that they are mounted the same as those on Roadsters and Phaetons, with the exception of around the different seat base. The ones I've used for Roadsters actually fit fairly well. Basically the lower outside bead should line up with the bead on both the cowl post and the panel behind the door and then the sill edge is wrapped under the subframe. Here's some pictures I posted several years ago of how things go on a Roadster.
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