The wasserboxer isn’t identical but it’s interchangeable with the 228mm air-cooled flywheel. The difference is in the position of the ring gear, it’s just a couple of mm. https://brickwerks.co.uk/product/flywheel-t3-wbx-228mm/
Yes, I had one but it also has wasser crank and thrust plates to I wondered if it was slightly different due to the thrust plate set up.
I pulled my old type 4 out onto a tyre with a rope around the tyre, then just dragged it out. It’s all I had. To replace, I jacked the van up as high as it could go, put a board on the jack with a rubber mat on to stop it sliding around, then jacked it up and in.
