It currently has a tired 5hp flat head Briggs IC engine. This winter it will have a new 7hp Briggs electric start.
Drive is belt, manual lift blade and it has a sleeve hitch (OOOHHH!! That will get you dreaming!!)!
I think that is a Gravely 2 wheeler blade. I think that from what the Gravely guys say about 2 wheeler blades having more curve and can roll snow better.
The flat tracks go right over concrete!! No damage. Reasonable traction in dirt, really needs "cleats".