Land Rover NRC 9462 and 9463 coil springs.
I've measured these up from my 90. They have 9.2 coils each using
16.5mm bar. The lowest coil is ata tighter pitch of 1" with the
rest being around 2". I calculate this gives a rate of 210 lbs/in
up to around 5.5" of compression and then increases rapidly to 240
lb/in as the lower coils touch. There will be some more increase
to around 265 lbs/in as the transition part of the coil touches with