Is it a Bestop 2-piece hardtop? (look for an etched logo on the windows).
Or check out this install guide.
If it's this one, I'm pretty certain you can buy that weather stripping from us. But the r big mail order places sell it too. I'm also tihnking it's not all that special or unique - you could probably take some of the old stuff to NAPA or someplace and ask for something similar.