Originally Posted by Blackcat10
Also be advised,as a former Toyota Tech. I have seen snap ring groves on the clutch pack break due to the high pressure. That's why Toyota went to the mushy or slipping shift. Would not advise it on a high mileage tranny.
Toyota, like other manufacturers, did not go to a "mushy" or slipping shift because of that type of concern. The softer shifts were by design for a more "comfortable" shift for people. All manufacturers have this in their cars and trucks. A hard, solid shift is just generally considered uncomfortable for the most part. Shift adapts have been around for years.
Though I do agree that on a higher mileage transmission, a shift kit alone is not the best idea.