Model mystery

Hello, I obtained a Murray Ultra but cannot locate any sticker with the model or SN under the seat or anywhere else. I need parts but am lost in what to look for. Anyone have information on this?

I do not know what year it was built and the engine has been replaced. It is a blue Murray Ultra with original parts being a 17HP 46" deck. It has an automatic hydrostatic transmission. Can anyone help with parts diagrams or model number? I need to replace the various belts and repair is r adjust the deck as it has uneven heights when raising or lowering. It may even have parts missing. Are there springs with this deck?

Thanks in advance for any help.

Hold the press! Found a very faded sticker which might help narrow down the search. Please see photo.