Well, similar maybe, but the Bimba ones are great. They were so
small and compact. Downside was the price, about $80 each after taxes and shipping.
For reference, 254 and us independently designed very similar gearboxes, but they were the ones who found the pancake 3 position cylinders, we were designing around the original like based 3 position which are much larger and clunkier.
We both had a dog based power takeoff on top, and we used the 3 position to nuetral the drive when the PTO was engaged.