I know this is a great debate about weather or not to do a Super 30 kit or to do a D44 swap. For those who don't now I went ahead and did a Super 30 kit. Side by side I'm very impressed in the size difference between the 27 spline and 30 spline.
Close up view,
I feel that this is a good investment and will make me feel more secure when I upgrade to my 36/37" tires when my current 33's ware down.