I can't help you with ID on the box blade. However, MtnViewRanch will know.
I pull a 60" X 630 pound Bush Hog (brand) Rollover Box Blade behind my Kubtoa B3300SU, whcih is the same size but 1,000 pounds lighter than your Kioti. Good match of equipment.
Gill was/is a top name in INDUSTRIAL STRENGTH implements......I'd grab that puppy.
I'll guess the weight at 700 pounds. (+/- 10%) Depending on your soil, with that weight you may not need rippers. You may be at max load for your tractor so rippers may stop the tractor, rather than penetrate, anyway.
