The time has come for my X to get the timing chain replaced. I will be getting my hands dirty with this project as soon as I know that I've got the right parts. After searching a couple of sites for the chain, sprockets, etc. I am left a little confused because some of the parts say they fit '05 - '10 xterras, and the others fit '10 - '15 xterras. WHY? I hate asking stupid questions, but I REALLY hate making stupid mistakes. Any info is appreciated.