When doing a drive shaft I have been taking out my filler and drain plug on a CDTi and it was T50. Both filler and drain plug looked the same size.
May be some on the forum will know if Freelander or other Landrover parts will fit or such as here:-
https://rimmerbros.com/Item--i-DBM572
https://www.euro4x4parts.com/en/part...ug/oe=lr002908