He could pay me $20 to haul it away for him...
Looks like someones homemade box scraper experiment that got hung up and the design failed. It would need a stronger replacement cross beam(box or round tube) for that bent angle iron one. I would also add a second tab for the lower 3PH pins, outboard of the originals(lower arms go between the tabs and common hitch pins are inserted) like the toplink attach is. This spreads the stress out.
That looks like the broke weld ripped out the tube wall. Probably too thin a tube stock or too much weld penetration/melted tube. The fact that the lower tabs and pins appear straight says it didn't take much force to torque this thing. The workmanship looked pretty good, just the wrong materials for the job.
If the blade and sidewalls are still straight, offer him $10 explaining that the whole crossbar and 3PH attach will have to be replaced with appropriate materials. It probably dosn't have a cutting edge and is just mild steel. If it is not re-enforced or at least 3/8" thick, pass alltogether. If it has a bolt on cutter, that is good. If it dosn't and is only 1/4" as it looks to be, you could weld on a piece of 3 to4" X 1/4" strap down there to re-enforce it on the edge and weld harden it, but again, that is a lot of work to make it right.
