I have both the kurt white and the hurst shifter. both have advantages. the kurt white has much shorter throws, and retains the factory reverse lock out ring as it's really just a modification of the shifter throws (two alum ovals modify the pivot point).
the hurst shifter is a new shifter, and is very smooth, about 50 cheaper and I like it for street use a bit better.
installation for both is similar, with the hurst being a bit easier, getting to the bolts is kinda a PITA, and dropping the exh is needed as is taking out all the interior trim, but a good mechanic can do it in a few hours.
I have done 2 hursts, and really like them. the "feel" is close to stock with very positive feel and short throw without being notchy.
I highly recommend both products, they work well!!!