:yes: they had the B series jap 5.7" diffheads.
U-series 6" jap diffheads will fit in housing and on axelsplines tho.
They came in late kp61 (3.4/3.5), late ke2, ke3 and ke7s. also AL25?
More ratios available than the B-series.
Australia however had borg warner diffs in later KEs, don't know from exactly when.