Just buy another instrument cluster for the car and use that instead of the one with the low mileage on it........ Mate of mine did it to his Fielder wagon, brought a instrument cluster with high mileage from the wreckers and drove with that in his car until it was time for its wof, he then swapped it to his low mileage one, he got away with it easy. Hes sold the car now but I feel sorry for the new owner though, the actual mileage of the car was 170k, but he put the original cluster back in when he sold it and it had 70k on it