Ok so I don't really know much about fronts and rears, so I am here to seek someone's wisdom. I heard the difference between and M1008 and M1028 was that one had a limited slip front, and the other had a locking front. Is this true? Because I sold a set of M1028's to a boy who claims to have opened the front and it was an open differential. Is that how they come is open or is sometype of locker suppsed to be in there? Axles were original to the M1028 as far as I know