There is no difference it is just what company calls what.:redneck:
Run with it Pete!!!:cheer::cheer:
Not true.
37/9 = 4.11
41/10 = 4.10
45/11 = 4.09
All will work just fine together in a mismatched front/rear application, but they are not the same. It's not an issue with Toys since the diffs are interchangeable front-to-rear and the gears are identical. But on something with mismatched differentials of different sizes, you may end up with a 4.11 in the front and a 4.10 in the rear or something.