You should be able to plumb into to your valve bank for you F-N-R bar. I am sure you cant split that stack valve and add another stack in there for the yoke lift. Be sure to be explicit with what you are doing because that valve will need to either have pressure release to allow it to lower when you release the bar or have the plumbing for down pressure. It is a super nice feature so it is worth it. I want to say that the part is maybe around $100. Dont quote me but when Morbark added that feature it retailed for $425 when installed on the chipper at the factory. So the parts aren't that much since that included the cylinder, labor and extra valve. Any questions or need any help let me know. Contact Rayco Mfg. they are in Ohio and represent Morbark, they should be able to help you. 1-800-392-2686.