Quote:
Originally Posted by grandam1979
Are the heads dated D228? If so production heads are a little more desirable than service heads. Looking at the picture both will be D228.
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These are early heads without the 96 above the center ports. The 96 was added later to aid the assembly line workers. The first service replacement heads were dates in January, 1969.
Look at post #25 by The Boss in the link for the dates of production for the RA II heads.
http://forums.maxperformanceinc.com/...04#post5256604