$640 seems a bit outrageous for a power-beyond to me. I paid $120 for the hoses and all 4 quick connect fittings. The dealer made the hoses instead of ordering from the factory, maybe cheaper that way. Installed it myself in 20 minutes. My dealer had a sheet with detailed instructions on how to install, very simple. Kubota should have a similar sheet. All the power-beyond is is a detour of the pressure hyd oil line out of the pump before it reaches your loader valve and 3pt rockshaft. When not in use, the lines must be connected together for fluid to reach the loader valve and rockshaft. It isn't THAT inconvenient to use the splitter on the loader valve, I would before spending $600+. Good luck.