Dual Ball Bearing GT28R Turbo with internal wastegate assembly. 
.64ar    turbine with 5 bolt exit. 
Very very Good response turbo for 4 Cyl applications. Fast spooling and capable of 290hp
Related products below are all needed to make this turbo work on a Rover T16
Standard T16 elbow will need one bolt hole elongating and the standard oil drain pipe needs both holes elongating.