i'm sure you could do it...it may be a little tight though...but yeah, the plumbing will be the same as in the pics i posted above...be sure that your overflow box is rated higher than your return pump and drill that ever-important siphon break! i bought my stuff at my local HD b/c its only 1/4 mile from me lol...just eyeball how you want your overflow line to run and you'll know what kind of fittings you'll need...i bought
(1) female 1" coupler,
(3) 90º 1" bends,
(1) 6ft clear vinyl tubing on the next aisle over from the PVC (7/8" i think),
(1) barbed 90º fitting for the tube (1/2" male threads on the other end),
(1) 90º reducing angle (1/2" female threaded on one end, 1" pipe on the other)
(1) 10-12ft section of 1" PVC
(1) small can of Oatey PVC cement
**you can see all these pieces in the pictures**
after you cement the pieces, be sure to wait a while then run fresh water through it for a few minutes at least to rid any toxic fumes/chemicals