Did you check your drivers side tow hook? Thats where mine is and believe me it took me a while to find it. Its way in there and theres not much slack. My neighbors 04 with a 6.0 is on the passenger tow hook and he couldn't find his either until we looked real hard. Just double check it. It should have one. Otherwise look on both sides of the block and maybe you can see if there is one already in a frost plug.