If you're just interested in the 1970 Yenko, Taz's link will provide the info needed, but there were untold numbers of other COPO Novas ordered by little known dealers in the U.S. and Canada. COPO cars could be ordered with the same options available to anybody buying a new Nova. In 1968, Fred Gibb ordered his 50 COPO cars as Super Sports to get the L78 engines. He also ordered them with optional THM400 trannys, bucket seats and consoles (which gave him upgraded door panels, carpets, etc.). I guess what I'm saying is, there could be several different kinds of 1970 COPO interiors, door panels, etc., because they weren't all ordered the same.
Bob