so let me get this straight, you want to buy a harness that plugs into a part you aren't even going to be using to you can "t" off for the IAT sensor. If it were me, i'd just cut the IAT wires and reroute on your own, just buy a sensor with the plug. Solder your connections and shrink wrap. Also, just shrink wrap the ends of the MAF wiring and tuck them back into the loom. As to where to put the sensor, i'm not experienced enough to tell you where.