LA heads on a magnum block???

Magnum blocks up until 1996 or so still had the oil passage drilled in the block for the shaft type rockers, even though the did not use it. Magnum camshafts do not always have the oil holes drilled in the #2&4 journals for oiling thru the block.

So if you have one of the 1992-1996 block, yes an LA head is a direct bolt on. Just use a cam and set of cam bearings for a LA and your all set.