Skypup - I have an older L39 as well and I am interested in putting the same setup on my TLB. Is there any chance you could help me understand how the valve block is connected back to the loader hydraulics? Even a couple of pictures would be helpful. I have the part diagram but would like to get a bit more of an understanding of how to install it myself. Here is the explosion diagram...We paid $750 for the OEM setup on our L-39.