Please let me start off by saying hello to everyone and I appreciate all of the great information. I needed some help, hints, tips, tricks,etc... on changing the lifters. I unfortunately have fallen victim to the notorious knock, click, chirp noise. I have decided to just change the lifters without changing the cam just to quiet it enough to be able to trade it in. I have researched the process, but I can't find anywhere that just replaced lifters. All I can find is replacing the cam also. The reason I'm asking, is because everyone says it can be done with simple hand tools, but then I read it requires a tool to center the timing chain cover. That tool is $400, which I do not consider cheap or simple. So, my main question is, do I have to pull the timing chain cover to pull the heads if I'm not pulling the cam shaft? If I do have to, is there anything else I can do our use to center the timing chain cover upon re-assembly? Thank you all in advance.