Fuzzy things
If he's talking about belt weatherstrips (which is what I thought at first too till I re-read his message), they don't bolt on - they clip on. The upstops also help prevent the windows from rattling.
If he's indeed looking for belt weatherstrip (which is what they're technically called because they are at about the "belt line" of the car), or aka: window felts, then I suggest he contact Restoration Specialties who sells them under their "Top Catwhiskers" name. They most likely supply Year One and Paddock anyway.
I installed a set (inner and outers) recently and they look just like the originals, fit perfectly, and look great.
www.restorationspecialties.com