Ah, but to be honest the car drives better with the arbs than it did with the ACE. Cant see any point in spending up to two grand to repair the ACE if it is likely to fail again. Now dont get me wrong I enjoy driving my Disco, but I have to say that it has possibly the worst build quality and reliability of any car I have ever had in 46 years of driving (exept for a Fiat I had many years ago). The D2 has as you say a very high spec., but alas it isnt always as reliable at it could be and if it's going to cost more that the car is worth to keep the original spec.Its gonna get changed. Sadly the days of being able to fix a Land Rover with three spanners, a screwdriver and a bit of chewing gum have long gone. Newer models are becoming more and more complicated, without just cause and will price themselves out of the market before long as just too expensive to repair. Ive had this car for just over three years and so far I have had :- New steering box. New rear O/S air susp unit. 2 ride hight sensors. Airflow meter , Injection harness. Radiator. Track rods and drag link. new rear discs. 2 new hubs. Watts linkage bearings.Fuel pressure regulator. Battery. 7 tyres. and I'm sure more, but I try to blot it from my memory. Also have the the usual issues with leaking sunroofs and door seals, oh yeah and I need a new rear bumper ( having lost a fight with a ruddy gate post) and a ding in the rear N/S wing from the same gatepost. Now if ever my wife will allow I would love to fit some spotlights onto the roofrack I had made and a raised air intake, and I must get the chasis waxoiled before winter. Not to mention the O/S headlamp that has condensation on the lense and the keyfobs that are falling to pieces and the drivers seat heater that isnt working(and winter is coming on). Tell you what though, I'm glad I couldnt afford a Range Rover Sport. The nightmares Ive been told about them !!!