Toro Timecutter Z480 (74353) Engine Blown - Options?

Hi folks!



So long story short, I blew the engine in my Z480. Oil was way low and stupid me had not checked it in a while, just froze right up.



So in looking around I don't see where you can just go buy another engine to replace it, the local dealer said they don't make that one anymore and suggested a short block.



Even though they don't make that specific engine anymore its hard to imagine there isn't some other one I can put in there, but honestly im not too familiar with how engines are made, which is making this difficult. Moreover, since I am not that familiar with engines I don't have many resources to pull from to help me find a replacement or alternative.



Is it even worth replacing? Just sell the entire mower like it is and get a new one?



I was hoping someone could steer me in the right direction.



Here are details..



TimeCutter Z480 Zeroturn Riding Mower

Model #: 74353

Serial #: 260000001 - 260999999

Year:2006



Engine: Briggs and Stratton 31H777-0168-E1





Thanks for any help! Much appreciated!