Since I'm going to be running GM NP203/205 t-cases, I am in need of a rear axle with centered differential. I have two rear 40 axles that could be grafted together to do this. I've seen somewhere (TT?) that someone makes housings that are modified. Moser Engineering is not far from here, so I could take two long side axles and have them shortened and resplined, could I not? What are the pros and cons of this idea? One challenge that is completely overcomeable (if that's even a word) is that one of my rear axles is 10 spline, since it would be shortened anyway, is it the right diameter to be resplined with 30? I would have to guess that 30 spline long side axles could be had for not much money. Thoughts from the gurus? Thanks, Luke