Check out the latest issue of TURBO magazine (Supra cover) and you'll find an article within directly from LEVEL 10. It answers lots of questions about transmission upgrades. It actually answered two of my most concerning questions regarding the automatic tranny I purchased from them a year and a half ago. But so far I haven't had any problems with it. Now I know how to work the throttle better in order to get a better shift and reduce my turbo lag out of it. Before I would get a lot of slippage, but now the problem's solved (with a little practice and answers from that article).