Replace deck

I have a 2008 61" model 227 Grasshopper mid-mount which I love. I was wondering if it is possible to place the 61" deck with a 72" wide deck. The wider deck was an option when I purchased it (I wish I had gotten it) but pricing was out of reach at the time. My engine is still strong and all components are good, so investing some money into mower I think is valid. I use to mow 3 acres and I now mow 7 acres and the wider width would help save a lot of time. Has anyone replaced their decks?