BB Alum head ID help...3919842 casting 5-17-66 ??
..did they make them that early or are they later service dates? 1976? or 1986? Thanks...
also 3904392 dated 3-1-67...L-88/89 correct? Would this head be a matched pair to the 842? How about value opinions? Worth more separate than together?
Thanks, Max
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