This is a '67 on ePay for almost $30K:
http://cgi.ebay.com/ebaymotors/rs-z-...orcev4exp=true
Was relisted for a bit less, though. Gone, now. May have sold locally? RS. Loves me some 1968 Z/28 RSs!!! Saw one for sale that is the same color as mine. Plus, it had original headers, never mounted, included in the trunk just like the one you mentioned! An older restoration and wanted $80K+. MacNeish certified. Though, he said the car was worth $55K at the time when I asked him...