DONT TOUCH THAT THROTTLE BODY WITH AN IMPACT WRENCH!!!!!!!!!!!!! Those parts are made of cast aluminum or something similar and the force of an impact wrench will probably break the ears off and then you'd really be screwed. You can get the swap done with nut drivers or open end wrenches just fine. Those bolts and screws are not torqued down more than 20 ft-lbs or so, there's no need for an impact wrench in that area of the intake at all.