Okay so flushed everything through and now the temperature sits perfectly in the middle, heater however isn't hot however. Not the biggest issue at this stage of the resto. So tomorrow I will get some petrol and take it around the field to see what does and what doesn't work mechanically the brakes need some work but they aren't terrible although the rears have no meat at all, the servo feed hose is also perished but they don't do too bad. Gears are nice and fairly smooth but that can only improve. No clonks or Knocks in the suspension and it's one of the smoothest riding things off-road that I've been in, hand brake needs adjusting as I expected, put the centre silencer on and the burble is lovely with just the centre silence on. Power steering is very light, lighter than my defender which is odd as I thought everything was identical steering wise. Difflock all works, haven't tested low range yet. So things are getting rather exciting especially as I've always wanted a Range Rover classic.
One thing I will add is how weird it is coming from Tdi vehicles to a v8 the power delivery is instant and smooth, much quieter. It's also amazing how although relatively similar in suspension and driveline is how different seats and a more spacious interior makes the Range Rover so much more comfortable to drive than my 90 truck cab.
I am very pleased with the progress.