when you do the lift, you'll notice your shifter itself has a long taper to it...fatter at the bottom. That's the issue with the body lfit. The fat bottom hits the trans inspection cover in 2nd, 4th, and Reverse. The shift extention, lifts the shifter arm up, and clears that fat part from hitting. The shift throws will be longer than before because you added length to the shifter arm.
$35 for the extention. $200 for the Hurst. $0 for cutting up your floor and bezel.