I got the new pan that adds 2 extra quarts of tranny fluid and more import to me, has a dip stick. The pan was $300 from Summit and my friend put it on for a $100. I have the TCI super duty Trans. and 575rwhp and I guess it heats up a small bit slower, but when you get off the gas and drive normally it cools faster. Was it worth the $400, I guess because the dip stick is nice. But how often do you need to check the level, unless your having problems...