I read the (so far) 9 page thread over at PriusChat on the BT stiffening plate and was intrigued by the discussion. I'm sure it no doubt improves the handling and stability as so many poster claimed. But I decided against it when one post suggested that its stiffness could cause stress points eminating from the bolt-on area of the frame. Perhaps the flexing design of the OEM brace is intended to avoid that or other related issues. Therefore I guess I won't purchase the BT plate even though it could very well not be a problem at all.