Auto Tranny

Does anyone know of a company that makes a gear conversion for Honda Automatic trannys. I heard someone saying about an upgrade to increase the speed off the line in an auto and then add a 5th gear for highway driving. I've been looking on the net for it for a while with no luck. I plan on doing an H22A swap and converting it to manual, but until then I thought about doing this if I can find it. Any help?

Scott