Any chance a Volvo Penta (1988) 230A engine head will work on a 1979 AQ120B? Exhaust manifolds are the same as well as valves, ignition and fuel systems. The interior parts of the short block are different as well as the head and valve cover gaskets. Head casting mark for 230A is 1000531 and for AQ120 is 1000160. Tough question, but maybe not for you guys.

Thanks