paint the inside of your passive intake holes flat black and add 1 more 90 or 45 to it, and prob want atleast 2 more passive intakes

you are goin to need more than an inductor/booster fan, should get a good quality inline fan or a squirl cage fan. and to hook it up i would cut a hole in side of cab(no room to get flex tubing in there) and run the fan outside the box and on the other side of the cooltube i would leave open. put a carbon filter on fan and you should be set