Here are some "project" units available for sale. Some are better and more complete than others.

Hahn Eclipse Hydro drive lawn tractor. GT700  HYDRO 12  Model RHDE-1236 Series 4212 with 36" mower deck.  Rare unit that ran, drove and mowed grass before engine was removed. Asking $ 175.00 as pictured.

SPRINGFIELD Model 62TE  with snow plow and mower deck. This has a newer engine installed. Ran 2 yrs. ago.  Hood was cut a little when engine installed. Tractor needs TLC / restored.  Mower nice shape !  Tires poor.