Two ports are for water cooled don't need to block them off as for the vac ports there are two next to each other on the side use them and block the others I can post a pic of mine wen I get home if ya want
It also fits perfectly in the high low boost switch (with a bit of modding ) https://scontent-a-lhr.xx.fbcdn.net/hphotos-ash3/45928_546206308723279_1663999586_n.jpg