Yeap what he said ^^^^^, I seen it didn't come with the hole after I paid attention to the year and seen the knock sensor on the block.Probably no threaded bolt hole in the block. Seat the tube properly, center punch the block in the middle of the mounting hole. Then drill and tap the hole.Make sure to take precautions to capture the metal from drilling. Try putting some heavy grease on the drill bit. That will help catch the pieces.