I think I spent well over $50 getting all the little studs that hold the valve cover down. And then it's about $3-4 for the washer/nuts that you screw on top of the studs.
A little FYI for you, you got the hose on the wrong tube on the throttle body. The hose you have running from the nipple on the sensor housing goes to the throttle body nipple right below the TPSpositronone wrote:
Also, I would have done the old two nut screw method for seating the studs on the water pump pulley. Take two nuts and thread them on the stud, then tighten them against each other and you can use them to tighten the stud down into its seat.
