A true-trac came with my used gears, I think the EZ-locker works the same way. If it does it really doesn't put that much stress on the cv's, I haven't had any breakage the few times I have ran it this summer. It should help out on the trail, but don't expect it to be like an ARB, sometimes you have to apply the break pedal to get it to engage.

Having extra cv's is nice if you do end up breaking one with the ez-locker, complete tie-rods should be in your spare parts bag along w/an extra hub. I am not sure how well the slotted rotors actually work, when you slot/x-drill oem sized rotors you are actually removing breaking contact surface.