I have a 2005 V-6 that I'm currently modding, but am frustrated by the fact that i keep doing the infamous "one wheel peel". I would like to put a posi trac in the rear end because i plan on starting to go to the track and would like to keep power to both tires (i've decided against a limited slip). I am wondering however, what would be the best, yet cheapest, posi trac that i could put in my rear end. Any help would be greatly appreciated.