Any of the 6X-4 heads # 3, 7, and 12. They will have a 96 to 98cc combustion chamber. On a 455 these will have a pump gas friendly 9.0 to 9.5 cr. These will also have all the correct accessory bolt holes for a 2nd gen TA.
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Its ok to giggle and snicker, Dont laugh and point
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