I had a small grader like this for our campground. It was called a "Basic". A John Deere 3 cyl diesel engine. Worked like a champ. When I worked for highways dept, we called them asphalt graders.
Those look muuuuuch larger than the one OP built.Looks like a front end loader is an option on the Basic grader.
Model 601(L) Hydrostatic Articulating Grader
Increase your grading and demolition work with the Model 601(L) Hydrostatic Articulating Grader available at Basic Equipment in Eatonton, GA.www.basicequipment.net
Bruce