I dont think anyone has tried before. I was playing with an old welded diff cage and my slingshot buddy said I should try a spool as its much neater. He had an old one in his garage that he dropped over before Christmas and its been on the floor until now. It wasnt until I pulled out a spare axle case to take measurements for the new shafts that I put the spool and the MG diff cage side by side on the table and saw that the bearings and flanges lined up pretty well. So we dropped it in loose and then decided to ditch the Minispool and Ford 8.8 side gear idea and go straight for fitting the big spool :) So I could have got this fitted over the Christmas holidays if I hadnt forgotten about it !! So far so good ;)