I have a heavy, old rear blade on my Ford 8N. It is a copy of an old Dearborn blade, but was homemade, parts cut with a torch & goobered together with big lumps of weld. I have done a pile of work with the old thing (welding & repairing it as needed), ditching, grading & crowning 1/2 mi. lane & levelling gravel for my shop & tractor shed. Picked it up for $100 because of it's butt-ugliness but would cost over $500 to replace with a new one that rugged & heavy. In the Spring before the lane gets hard packed I use a Massey Ferguson 6.5'disc harrow on the shoulders to loosen it up before grading/crowning.