I have a 2.76 rear end that has had the bearings replaced with green bearings. I also have a 2.76 sure grip rear end removed from another car with unknown miles. I know the brake lines on it are jacked up...but work...I already replaced all of my brakes on mine...trying to decide if I should swap all the new stuff over to the other rear end or keep mine and just swap the diff. Ive never swapped a diff and have no idea what I would be getting into...special tools? problems? is it really just removing the bolts and axles and swapping the diffs? I am considering getting a 3.23 gear set too...never changed those either. both are 742 cases.