I picked up an '11 SSV 4wd 5.3 tahoe about 6 months ago for work. As I've come to find out, for my purposes the truck needs to be quicker in certain situations, I see that on3 has a kit that will be direct bolt on for my truck but I've read mixed reviews as far as tuning the 6l80 and it's power capacity. My question is what will it take to get me a dead reliable low 13 high 12 second truck?