I do have a pair, if you still need them. The rubber extension pieces are sold by many of the aftermarket truck parts suppliers. I make my own staples with stainless steel wire, bent to duplicate the factory staples.

Tony Smith
4-5-6 Chevy Trucks
501 Scott Avenue
Kansas City, KS 66105
913-207-7789
[email protected]
Photos: http://www.flickr.com/photos/4-5-6chevytrucks/sets/
Custom Parts: http://www.flickr.com/photos/4-5-6chevytrucks/sets/72157627022818563/
www.4-5-6chevytrucks.com