I haven't taken the valve cover off the heads of my dead 2.5L but my plan was to first check to see if the marks matched up with the chain and if they didn't, to mark the chain and cam gear so that when I reassemble it on the 3L, I just have to match everything back up to my marks. Does that seem like it would work??? I just don't see why you would have to use the TSB method if you can mark everything yourself and then put it back together that way.
