You can pull one from an early-ish Cressida, but more than likely it will be an open diff and not LSD. Check the firewall code and if the diff code begins with "F" you can fit it in the Supra. Not sure about the UK, but the 1985 Celicas here also have F code diffs, w/ 3.90 gears, but again, are not LSD units.
__________________
|