New OEM LH driver side roof side weatherstrip retainer channel for 2005-2013 Corvettes.  Part #4 in diagram photo.  Attaches with 4 screws - not included.  

Replacement instructions- To replace simply pull on back of weatherstrip to slide weatherstrip out of channel (rear of weatherstrip may be lightly bonded in place, just peel up).  Remove retainer with 4 screws.  Reverse procedure for installation.