It's been a long time in the making....
https://www.defender2.net/forum/topic20971.html
https://www.defender2.net/forum/topic78628.html
I think I remember someone on Aulro getting one to test in Aus years ago. They seemed to get a lot of short nose failures
Defender2.net usually has a group buy going on with a 20% discount. Unfortunately, the import duties now cos of Brexit run to about £80 on top because they are shipped from Cyprus. Might be cheaper to get an easyJet flight and pick up in-country 😁
Shielder supply terrain tech so it's basically the same thing
There's a new outfit called Ultra Bulkheads that are creating factory original bulkheads. May not be able to order one yet though https://m.facebook.com/Ultrabulkheads/
Just to confirm, the head seal is the large O ring; as Snagger explained it "the seal between the main case and the square block on the back". I realise the video thumbnail shows the top cover seal, but if you watch the video you'll see where the head (square block on the back) is removed (@ 7:09 timestamp), and it has to be done with the pump pointing down as the springs are likely to fall out