Diff Locks
Edit from future me: These did not perform very well. Write-up will appear here eventually
Controls
Discovery 2 EGT and/or cruise control actuator solenoids:
Found on loads of cars including TD4 Freelander 1.
Plus a BMW X5 air suspension tank (it was cheap from a breakers on eBay and looked small enough) for vacuum reservoir, and a bit of ali to mount them on…
Plumbing under the driver's seat is tight due to the less than perfect fuel plumbing which is a job f'ron:
Plumbing
Re-done in 6mm push-fit with my usual nickel-plated brass Camozzi fittings - look like stainless but don't cost much more than decent plastic ones!
Old plumbing Vs new plumbing
You can see how much more bore we've got by stepping up - something like exponentially lower flow resistance too!
A 10mm push-fit line to feed the vacuum tank, via a non-return valve - I really want this to work properly!