If you have that sort of power you could easily operate just through a spool valve but it does consume more hp and create more heat in the oil so more fuel but PB just reduces the oil requirement from the tractor.See I’m not sure about the whole power beyond thing so just going by what dealer is telling me although they are a new dealer to my breed of tractor so possibly not the most knowledgeable about fitting it . I have asked the question for them to ask valtra rep if there a cheaper way of doing it. I’m not fussed about it looking all neat and tidy at back