Hi,
Congrats on your new tractor! The ROPS that I have should fit perfectly. I ordered mine from just tractor parts and they were very helpful. Depending on what state you live I. You might be able to get a rebate. I haven't regretted installing them for one minute. They ate a great life insurance policy!
Sorry for the very late response. The program is out of NY state, and in New Hampshire, NY administered the claim for my rebate through NYCAMH. the rebate program says 70% but they paid almost the entire amount, and you are eligible for one tractor each year. This is there website, they are great people! https://www.nycamhoutreach.com/ropsr4u/ny/