I hate being the guy to beat a dead horse, but I keep pulling up information for the pre 2007 models and I'm not happy with what I'm finding for 2007 onward.
If you remove the AIS, you end up with 3 holes that need to be plugged.
#1 Is on the engine. So you need a block off plate.
#2 Is a little nipple, also on the engine. Any automotive store has caps for that.
#3 Is at a 3 way junction of breather hoses, automotive store has caps for that.
A trip to most any automotive store and $5.00 solves #2 & #3. (and you still have a bunch of extra caps).
The only block off plates I can find are part of expensive 30/40/50 dollar kits. &%$#@!? Doesn't anyone sell just a cheap block off plate?