Hi Paul and welcome to the Stovebolt!!
Trying to find those original stainless pieces is tough here in the states, too! Best course of action might be to place a wanted ad here at Parts Wanted Forum. You could also follow eBay and get lucky. I'm sure others will be along with more suggestions.
At the top of this forum, I pinned a link for a place that sells the stainless trim that is pretty close to the original pieces in appearance. If you're good at fabricating or know someone who is, you might be able to fabricate and weld some handles to the trim. It looks like the company has the trim in stock, but they are warehouse pick up only. Hopefully, a member might live close by that could help you out if this becomes an option for you.
As for the rubber, I have no profiles pictures of the stuff. I do plan on, when I repaint my Suburban, installing new weatherstripping on my side windows. When I do, I plan to take better pictures for the tech tip. I can also take profile pictures with measurements of the rubber that our suppliers offer. The only problem is, I've been threatening to paint my Suburban for 3 years now. Maybe the fourth year will be the charm!
Again, welcome!!