Just been looking for information on this. Looking to purchase our next daily driver project, one needs a water pump, one needs the cam and lifters. My thought is if I am down to the water pump, take the time to do a chain and cam swap anyway since these have not been dealer addressed since they live past warranty. Looking at 1500 for cam and lifters or less than 400 to do the MDS delete lifters. Thinking the plugs are the smart thing to do regardless and 1000 to not have to tear it all apart again might make sense. Changing hard parts to non MDS means you can never go back.