HAVE A CASE TRACTOR 595XL, HAS APPROX 80 HP , WHAT TYPE OF SLASHER IS SUITABLE. I WOULD LIKE A 5 FOOT SLASHER, WHAT IS THE GEAR BOX MINIMUM / MAX HP. THERE ARE SOME CHEAP ONES BEING OFFERED WITH SAY 46 HP GEAR BOXES , WHAT DOES THAT MEAN. I AM JUST A HOBBY FARMER. FORGOT TO MENTION MY OLD...