Well going off book time either the dealer is a rip off or somebody's number's are inflated. Book time for a 2004 cts-v is 3.4. Round it of to 3.5 and you are looking at $315. Then msrp is 350 for the water pump so you have a grand total of $665. So that leave's $325 off the price you posted. Like I said maybe the dealer overcharged or the number's were exaggerated. But 6.5 hours on labor is outrageous.