My understanding is the CST Z84 and Custom Z62 are totally unrelated to the B98 option-Custom Side molding? Most Customs/CST were equipped with the side trim but I'm pretty sure its a seperate option. I think later years in our series the body side molding was included in with the CST/Cheyenne options.
The chrome trim on the grill was unrelated to the CST or Custom options (In 68's anyway) or even the body side molding option. Even basic plain-Jane 68's could still have chrome grill trim. (But it seems not all?) 68's also have the front fender trim and front hood trim that no 67's had. Also the front of the 68 grill was usually white behind the inserts. (Your picture on your site shows this well.)
Also, isn't there a slight difference between the 71 and 72 grill? I think one year had a black pin stripe(s) around the chrome grill edge and one didn't.
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Unrestored 68 C-10 CST. 327 4-Speed. 48,000 miles.
Bismarck, ND
See My truck and rare 1967 prototype pictures at:
http://community.webshots.com/user/toms68cst
MSN Messeger: toms68cst@hotmail.com