Phantom co2 options

[paintballz]

Is it possible to run a 3.5 oz tank on a stock class vertical air kit? Can you just take the 12g quick changer off and replace it with a 3.5 tank? How do you get your gun like the gun posted below?
Thanks and sorry for my lack of Phantom knowledge

http://www.google.com/imgres?imgurl=http://pic60.picturetrail.com/VOL1706/9358206/17419130/270739940.jpg&imgrefurl=http://www.pbnation.com/showthread.php%3Ft%3D2475760&usg=__AchbD3kKD6H139r-7IiymFFbEPk=&h=400&w=500&sz=92&hl=en&start=0&sig2=LFv SmuzmNJaUmWmAMQhbCg&zoom=1&tbnid=fk9x5L9CQH3xlM:&tbnh=170&tbnw=204&ei=34fwTLCGGcyOnweB8rWGCg&prev=/images%3Fq%3D3.5%2Boz%2Btank%2Bphantom%26um%3D1%26hl%3Den%26client%3Dsafari%26sa%3DN%26rls%3Den%26biw%3D1649%26bih%3D835%26tbs%3Disch:1&um=1&itbs=1&iact=hc&vpx=1359&vpy=545&dur=759&hovh=201&hovw=251&tx=189&ty=185&oei=34fwTLCGGcyOnweB8rWGCg&esq=1&page=1&ndsp=27&ved=1t:429,r:26,s:0

[greenmtn]

Yes, thats exactly how you put a 3.5 on a vert air setup.

I

[rolondo]

Yup.  It works just fine that way.  I personally don't like that setup, as it throws the balance off a little imho.  One of the advantages of the phantom is the fact that it's so light weight.  I think you lose a little of that when you add a tank to the bottom of the gun.