Box scraper AKA box blade is the tool to use for grading out dirt (such as putting in a yard at a new home construction site), spreding NEW gravel on a driveway, cutting a drainage swell across a lot, etc. costs (for a 5-6 ft.) from $500 for an el chepo model, to over $1000 for a heavy duty one. Some skill and practice required, it would work for re-working your drive, but with the advent of graders such as grademaster, it's no contest. A grader tool is pulled behind the tractor, the first blade rips up the crown in the road, large pcs of gravel and "fines" are mixed in the middle, and the rear blade lays everything down nicely. It may take 2-3 passes to get everything perfect, but PERFECT is the end result. No great skill required, just drag the grader around and provided you had enough gravel to start with, you have a like new drive, crowns, washboards, ruts, holes all gone! Several manufacturers have videos (also youtube) Most costs $1000-$1800, mine came from J&I manf. Madill Ok. (called a shermanator ? ) and my 6ft. cost $700. It is the best tractor implement I have!
Jack
