I will check the head bolts haven't stripped out of the block, by seeing if I can tighten them to torque spec.
If they wont tighten then its a waste of time swapping the heads, and the engine will get pulled and scrapped.
I would absolutely love a s62, or even an m62b44, but I just don't have the money or the knowledge.
Maybe get a bank loan and send it to Ray.
What is more likely would be to swap in the m54b25 and box from my parts car.
Its a shame to go to the hassle of doing an engine swap (plus cert I think), and then only put in a 2.5L six.
All this doesn't matter if the block on the n46 is ok, as I already have the full gasket set including new bolts from a while ago.
The engine already has had new water pump, ccv and hoses, radiator, sump gasket, fuel filter, oil cooler, seals and hoses done in the last two years so hopefully its not for nothing.