I think it's way easier on LHD models, there's no brake & clutch cylinders in the way. Try to undo the top bolt, if it fails it's best to do it in a vice. I have done it in and out of the car, in car there's a good chance the washer gets mangled
Well all is well thanks for your input guys,PITA but seems to be all good!Luckily had the use of a friend with small hands,a vast toolkit and a hydraulic ramp.We fitted the pump i bought from Rich that was on Trinity,as i knew he had no issues with it.Weirdly the return pipe that came with it we couldnt get to seal properly,so rather than sod about with O rings we swapped that pipe for the one i had on my pump,and it seemed to seat better and wasnt leaking at all after that.The high pressure pipe i had made up seems all good too.Thank god for that!!!!