you could try to Google herculesrops it will send you in the right direction but you deftly want role protection one of my dad's best friend back in the early 70s died when his tractor slipped into a ditch less than 4 feet deep but enough to turn the tractor over and break his neck absolute heartbreaking I remember going to the funeral and I learned a new respect for tractors that day even though I was so young. I still see the ditch when I cut the grass at the top of my property and I remember when his wife would put flowers at the site every year on that awful day don't become a memory no matter what the price have them installed.
