15x6 Rally Wheels with DG code on ebay

[Hot Rod Todd]

What is the deal with these? My Chevrolet by the Numbers book says these shoiuld be 14x6.

http://cgi.ebay.com/ebaymotors/Wheels-15X6-DG-COPO-Corvette-Camaro-Z-28_W0QQcmdZViewItemQQcategoryZ140747QQihZ011QQitemZ320336477851QQrdZ1QQsspagenameZWDVW

[JohnZ]

"DG" are fairly common 15x6 '67 Corvette rally wheels; "B" and "DC" were also used for the same application. "B" were found very early in the '67 model year, and were replaced by "DC" and "DG" later in the year.