The impact sockets are something I never would have thought of... since I've never owned an impact wrench, but I've broken enough Craftsman sockets to make it worth getting some. I've got a regular assortment of sockets (1/4 & 3/8, both deep and reg, 12 and 6 point) a handful of open/box wrenches and really big hammers! Just wish I had little Japanese hands.Just getting the spark plugs out for a comprression check was an adventure! I'm used to huge underhood spaces on mid-70's Chev trucks...I'll take a look at the throttle body stuff, thanks!

Jim Sorenson