Larger core is the easy identifying feature, which makes it about 15mm taller.
Because of the lack of room in the engine bay, we are "dry building" the whole engine, including loom, pipes, hoses and all ancilleries.
It will then be carefully dismantled, and reassembled in the engine bay piece by piece, overcoming any ummmm, fitment issues on the way.
I have to be thankful that Chris's enthusiasm, quest for perfection and patience matches mine... It's taken some time to get to where we are, and when it's built, we get to take it all apart again... Except to add to the fun, instead of working on the engine stand we'll be in the engine bay.
Any gynecologists around??