We installed the all-important nitrous plate first. Remove the air-intake duct at the front of the throttle inlet and disconnect the three cable linkages. Then you can remove the four 10mm bolts, as shown, and pull the throttle body forward. Before you install the plate, its a good idea to secure the supplied gaskets to both sides of the plate with an adhesive. Pull the throttle body forward and slip the plate into the gap, making sure the line outlets are on top, and on the passenger side. We had to bend the line bracket slightly upward to clear one of the intake runners. Nitrous Works includes four extra-long bolts to reattach the throttle body in order to accommodate the extra thickness of the plate. Thread em in and snug em down to seal the gaskets.