I believe CVRT steering calipers (and pads) are in fact Jaguar E Type calipers and pads - apart from the seals (not the piston boots) which are different for mineral oil.
It is possible therefore, if I am correct, to fit E Type calipers (on an exchange basis?) and Landrover steering master cylinders, and not use mineral fluid in the steering but DOT 5 (silicon).
Diana