I didn't see it in the posts, but make sure you crack check the heads. Pay particular attention to the area between the valve seats. Then there are the cist if doing the guides, seats and resurfacing. As been said, you can purchase a new set of heads in exchange for a lot of repair work and end up with better performance at less cost. In my case, I repaired my pricey tunnel ports, saving them and the dual-4 intake. But yours is not the case. I recommend you check prices and do the math.
