pigtail wire is GM part# 12102620 and what you get from O'Reilly is a BWD brand part# PT778 for $16.99 each.
push in type IAT sensor is GM part# 12160244 and what you get from O'Reilly is a BWD brand part# WT3036 for $13.49 each. This sensor fits the 98-02 LS1 Camaro as well as many other vehicles.