need weatherstripping for 87

Ive been trying to find a piece of weatherstripping for my left front door window channel. It is right in front of (sitting in the drivers seat facing forwards) the little triangle window. It is for the drivers door main window. Im only missing like a 4 inch chunk of it. Ive looked all over online and I see many weatherstripping kits, but none look like the one on my car (it basically just looks like a "U") any help? Thanks a lot

goto jcwhitney.com

Or are you talking about the rubber lining of the swivel window?