I have a quick diff question. I just bought a detroit locker for my dana 44 rear, and I just recieved the rebuild kit from Yukon for it. I was looking at the upc for the Yukon kit and it said for Dana 44 30 spline. I was pretty sure my diff and axles are 31 splines. Is this just a mismarking or is there really a dana 44 30 spline. Will it matter because this is just the rebuild kit not the detroit? I may also be confusing myself too much also.