Yes, I did that on mine.
It involved a couple of valves, and a T.
And you are correct, it is a bit tight in there.
Let me get some pictures for you over the next couple of days.
I just installed one, its a tight fit, to make it easier I cut the feed line and installed a elbow, (90 degree). I just have to rearrange the filter.
(http://i570.photobucket.com/albums/ss145/pjcdemil/IMG_2652_zpsyq1atptg.jpg)