Just did this yesterday and took about 8 hours, including the 1 3/4 hrs running around trying to find a o-ring for the lower fuel injectors. Nobody had them but one auto store about 1/2 hr from my house. One got ruined because we had to take the rail off 3 times because we forgot to put on 2 of the brackets. The one thing I forgot was to take out the old EGR valve and put the new one in. I remember checking the original one and looked fine still. I think with all the running around I had to do we were in a hurry to put it all back together and forgot to do that. Hopefully as long as mine looked fine it wont matter too much. Thanks for all the help and the link to the video, it made the job easier. Hope I never have to do it again.