I am looking for a rear mounted tiller to mount up to my 1997 JD 425 AWS tractor. I don't believe John Deere had one available so I am wondering if one of the older model tiller like the #33 can be modified to work with the JD425. If not, is there another John Deere model that can be modified to work with the 425 AWS? Being 76 years old I am too old to chase my Troy-Bilt rear tine tiller any longer. Thank you for your replies.