trac-lok

I am a new 2011 V6 owner. I love the car at higher speed but feel that that the acceleration is sluggish down low. I want to replace the stock 2.73s with 3.73 but I have a few questions. (Forgive me if these are dumb questions..!) First of all: 1.) Would I notice a significant improvement in...

I wonder how strong a 7.5 trac-lok diff. is? I have heard the most they can take is 350 HP then other guys say it can handdle 400HP just fine, then some people tell me it can even take 450HP MAX!!!! wow.... but i dont know if these ratings are at the engine or if they mean RWHP??? I want to know...