Looking for a rear panel! Pic inside!

Hey guys, im looking for the panel circled in the pic BUT the RIGHT SIDE not LEFT! Its a 63 valiant 4 door. I looked as best i can but cant find anywhere that sells em. Also please keep in mind in in canada,sask. thanks

P.S: Also if anyone has links to places that sells parts for my baby would be great! Needs all weatherstripping and fabric strips between the windows.