Changed the impeller today it wasn't that hard. Had to take all the hoses off and pick out pieces of the old impeller. Took a couple of hours but next time should be under an hour start to finish. The dealer was going to charge 250 for the parts and labor and additional if he had to go through all the hoses. So for a new kit I purchased for 100 (from the dealer will get from on-line next year) so I saved 150 off what the dealer was going to charge. Well worth the time and effort!! The 5.7 L DD TKS has a bravo 2 water pump. Its easy to find online.