After much debate, i have decided to run flanges up front. I wanted the versatility of the manual lockouts but I refuse to be breaking 35 spline hubs all the time. From what I understand, the problem with the 35 spline hubs is that as the axle OD grows, it leaves less material to make the drive portion of the lockout. This thinner gear is weaker than the thicker 30 spline unit which is fairly weak to begin with. Long story short, why doesn't anybody heat treat/cryo or make some bling 300M drive gears for the lockouts? I know I would buy them just to keep it easy to drive on the street. If they did make something like this, I wonder how strong it would be?