I pulled the injectors on my 05 last night to have them beefed up. I noticed when I turned the valve cover over to put parts in I noticed that there was only one spring on the valve cover. Looks like there could be another but not sure. I went a head and pulled the rocker box because I am going to head stud it while I am there and never saw another spring. I was checking to see if anyone nows. I am sure my 03 did not have the same spring on it and as much as I was in there I would of seen it.