I have found a set of 289 heads with the markings of C60E-M. The book I have states these heads are 63cc heads not 52-55cc, would these be correct. The seller wants $100 each, is this too much. The seller has stated they are the slotted guides for non rail rockers.

Thanks
Greg

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1966 Sahara Beige Mustang Coupe ... my baby since 1981