my spark plug job cost me $600, My GF's cost her $800. And like I said I am a marine engineer and tend to do my own maintenance. What is really bad is it is so common the sho has an exact chart on what to charge you based on how many they break, And Napa sells a Ford 5.4 liter engine spark plug removal tool. Probably would work ok if the engine wasnt in the dashbored. Sorry to be slamming FOrd, but geeze Loiuse MY NAME IS JOE FORD ! I am related to the owners and paid for my barn making a killing on ford stock. And I am driving a frikking dodge. That being said my search criteria included a 2003 7.3 Ford, or a 2006 cummings dodge.