A friend of mine bought a Excalibur Fountain with twin Trs Speed II drives. After looking at his options He wanted to go with a Konrad drive but after taking to many who had them he went with the complete Konrad package gimbal housing & drive. I wanted him just to put a stock Trs drives back on, the drives would be 2" higher & most likely faster than the speed II. Konrad has a drive that can be used with the Trs gimbal but that's still putting a bandage on the Trs set up, you might as well use the Trs drive. He bought the used drives off this Konrad race boat for around 18k & thought he had a good deal.