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 the truth....is there any site that shows actual proof? or from personal experience?