Questions about '65 'cuda parts
It's called vacuum metallizing or plating. I sanded my interior plastic chrome pieces and painted them with Krylon Dull Aluminum, they look good but not stock, but it cost me $0.
VACUUM PLATING
http://www.cvvacuumplaters.com/
http://www.mrgusa.com/
Original looking window locking strip is not available, but you can get Chevy stuff that is dirt cheap and looks great. This is what most people do. The original is concave, the Chevy stuff is concurve.
Read everything there is to know about it here:
http://www.enbcom.com/board/messages/394/440.html