I really want a shift kit for my car and I know everyone goes with Transgo. But with Transgo, you just use your stock shifter, right?........with the B&M you actually get a ratchet shifter, correct? I really just like the idea of getting rid of the stock shifter. BUT, what does all this mean??? have to buy an aftermarket controller or what? (* fits 4L60E & 4L80E with used with custom installation where an aftermarket controller is used to command the transmission. ) How much will installation cost and you guys think its worth it? Thanks!