I have a corporate 10 bolt front end in my Blazer now, but have a 12 bolt front end I can swap in. Is it worth the trouble? Does this 12 bolt have better axles,carrier etc? I know my 10 bolt has 28 spline, Lame-o axles in it. I've never torn a 12 bolt front apart & I have no idea what it came in originally either. It just seems that something's got to be better in it. "who dares wins"