Take a look at what other people have said in other forums. Everyone that puts a diff in their car says "it's the best $XXX i've ever spent"

Also, beware of the jackasses on that forum, like ones' saying any four wheel slide is a drift! LOL So that means you go 100mph and pull up the e brake and then do a brake stand and flat spot all four tires going on the salt flats spinning. YOURE A D1 DRIFTER!!