Well, I had a good run. 262,000 hard miles and I'm hearing the clatter of my timing chain. More so on the drivers side. So if I'm going in.......Doing it all. I've timed plenty of Jaguar 4 valve motors. (4.0 and 4.2) Although they have Variable Valve timing I'd think i'd be easier to do on the Marauder. Has anyone ever done this job? What I'm really asking is should I buy the tools to hold the cams in place or can I do without?