Dave put alot of research into his design and with his MANY years of experience he made it a better design than the others on the market. Some of the best parts are the slopped floor so it does a complete drain out, the large drain plug to prevent stripping out a tiny one, and the perfect amount of additional fluid that a trans needs. Dave explained to me face to face how he came up with his design and pointed out each reason. Ill never put another brand on any of my personal rigs again.