We designed our own pan to get several features that we could not find in other aftermarket pans. The interior of our pans have a sloped floor so that all the fluid can drain out. Our drain plug takes a 1" socket; no more stripped Allen heads or threads. The drain plug in our pan is magnetized, and is at the lowest point in the pan in to catch any magnetic debris. Other drain plugs sit above the bottom of the pan and will not catch debris. The exterior of our pan is flat, allowing the transmission to sit on a jack without rocking. The sides of our pan are not ribbed, increasing its strength. Our pans are intentionally designed to be more fragile than the transmission case. Other pans that are excessively beefed up are too strong and tougher to break, which will then result in the breaking of the transmission case instead. It is much easier and cheaper to replace the transmission pan than the transmission case.