swisher 60" trail mower (side cutter) works great pulled offset from my JD 325 with a 60" deck -- 4 acres in 1 hr, no problem. BX2360 should easily pull two of them. only get the 4 wheeled versions, 2 wheeled versions scalp.
My 35hp handles a KK 6 foot rear discharge with ease and it made my 4.5 hours + of mowing to a little over an hour.
EDIT: I forgot that my 1951 MF20 has been using the finish mower now so I don't have to remove the BH. It doesn't have as much power but it gets the job done real well. It is best with sharp blades.