There are two hydraulic ram designs commonly used for full hydro steering. A single-ended ram is the easiest style to mount. You attach one end to the axlehousing and the other to the tie rod. This style is great for any axle but especially Dana-style axles where the differential comes out the front of the axle, because it is easy to remove the ram for gear and locker service. A ram with a large-diameter piston inside the body but a small-diameter rod allows a large volume of steering fluid, resulting in a strong but slow performing ram. If the ram rod is also large it will reduce the power and increase the speed of the ram movement.