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While the early kit used threaded rod, the new kit uses longer bolts. This makes for a cleaner-looking installation to sandwich the nitrous spray bar plate between the EGR spacer and the upper intake. Remove the throttle body and the EGR spacer, and then remove the factory studs either with a stud remover or by double-nutting them and backing them out with a wrench. Don't forget to install the new gaskets as well.