Looks like it might be the 5-1/4. That was used 1967/1968. In 1969 the bolt was 5-5/8. I will look to see what I have.....Joe
http://www.gmpartswiki.com/getpage?pageid=12120
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1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E
1970 'cuda Moulin Rouge, 440-6, 4 speed
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