I have no listing for DOUE-AA. These are old heads. Are you sure the casting # hasn't deteriorated at the top of the O and makes it look like a U. I have run into this with old blocks/heads.
The closest I have for you is DOOE-B(302 63cc 1.78/1.45) or DOOE-C or G(351 60.4cc 1.84/1.54). Do the DOOE have an AA after like the other head?
Good luck. I would not use them if they are mis-matched.
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