as can be seen here.. https://honda-tech.com/zerothread/1598912

ill paste the text in here for the lazy clickers!

i know they are the same bore and stroke and their heads are interchangeable, but i was wondering if the mains caps, oil pump, water pump, main seals, literally everything can be taken from an A6 and put into a Z6. i just rebuilt an A6 not knowing there were hair line fractures in the front of the block (it was in an accident) so all of my internals are brand new and need to be swapped into a new block. i came across a cheap Z6 block, i wanna be sure its all swappable before i get into this. thanks guys.
ive searched like crazy, any help would be appreciated.