Its been a while, Just back from a short camp on the edge of some wood's. Have been side tracked with a rather rusty discovery the last couple of months. But finally got around to changing over to 4.7 diffs. I did the rear one about 3 month's back, as it was the easiest one. And after the advice from a friend drove it for a while just on the rear prop to see if the gearing was ok. Finished the front axle last week, as it needed completely stripping to change everything over. The speedo is under reading now by 5mph, but 55mph (60) is now achievable at just over 3000 revs. It has made such a difference to the smoothness and noise, just dropping the revs and ultimately the props not turning as fast.