TJM- I think you already are headed in the right direction, knowing you want and will probably use an Oliver hyd system. A good #3 Hydra-lectric unit would be the ultimate. Unless you NEED the &amp;quot;lectric&amp;quot; aspect of the unit, just the hydraulic unit itself would be good enough. Non-electric units may be easier to find and less expensive,MAYBE. Also, the first hydraulic units did not have a filter on them. Someone told me that even with a filter not all the oil passes through the filter every time, but I&#039;d still rather have a filter. Just my opinion. Jim thurnau