I know the owner of #595 claimed the system was "all wrong" (probably because he was looking for / been sold a MG ZT260 mixer valve, not the different R75V8 one, at a tad under £600 quid). He had quite a lot of leeway to invest some money on top of the 'hammer-price' at last year's auction though. All Rovers including the V8 should have the thumbwheel of course, unlike the ZT 260, but that special L/R mixer 4-pipe-valve. None should have a bodge constructed from R45 valves!
Rover mixer valve, 1 actuator motor, 2 valves, "iffy"nylon tracked actuator-peg (LHD version).
IMG_1289.jpg
All the part numbers of the valves etc are here, but drop me a line by PM if you need any info, which may well not be visible to you, so long as you promise to join as a full member when you get a car !!
David