I just looked up the dimensions for a carboy, and it appears they are too big to fit in the Kenmore/Sanyo 4.9cuft model.....sorry about that. I moved straight from a bucket to my conical and have never used carboys (I have this strange magnetic draw toward glass chards, and can pretty much guarantee if I used them I'd become very close with a hand surgeon).
You can take any fridge and remove the door. Then make a larger "refridgerator cabinet" out of 2" pink styrofoam board to whatever size you need. Same temperature controller and everything just takes a little longer to get to temp the larger you go is all. Just my two-cents.