If you refering to the lift arms and linkage they dont have to be Deere. There are many places that you can get aftermarket lift arms and linkage for possibly less than Deere. Be sure to get the aftermarket ones as close to spec as you can with the right demensions and strengths as to make the 3 point function as it was designed to. Are you going to run hydraulic top and tilt or just a standard hitch?
honestly i don't know .primarly was thing of cutting some grass.what would you suggest.also where is the best place to find specs for three point hitch