Anyone know where I can find the window frame felt that goes on the bottom back, or what I can substitute it with I can't seem to be able to find any, on any parts suppliers.

http://s219.photobucket.com/user/ratamugrosa/library/1952%20Chevy%20Monster%20truck

http://s219.photobucket.com/user/ratamugrosa/library/1954%201ton%20wrecker?sort=3&page=1