Weatherstripping chrome trim pieces

Where are some of the best places to source new weatherstripping, felts, rubber scrappers. Basically all the window trim. All of my chromes except a couple pieces around the rear quater windows is in very good shape. However due to its age and weathering the rubbers are deteriorated. Do you have to buy complete replacements or can you replace felts and wiper strips attached to the chrome trim? Sorry I dont know the proper terminology for all the trim and weather stripping parts. It is making the look up of part of site a little confusing. Where else can I look for the type of parts? So far I have "steel rubber co" and year one bookmarked. Any other suggestion?