NAG1 = W5A580
but in the diesel's case it is a W5J400
They all have the same internals but different torque converters
My diesel has a larger pilot and reverse mounting to V8's and V6
If you require any parts for these units, head straight to America
NIL stock Australia
The diesel's valve body is a 722.600
Even though this number is the same
as Mercedes and Jaguar,
they are NOT the same valving
Go figure