For sake of a valley gasket I'd check cam and pipes and core plugs on inlet
I believe there are also some at the back of the block that require engine removal to replace.
Was everything ok?
im just throwing this out there for you to look into
My brother has just binned his eight for a 300tdi
when he sends the log book off to change the engine type and number the DVLA want to know where the engine is from
to keep track of stolen and stripped motors