Welcome!
Sounds like you have a Range Rover Classic, and being a 1994 model it will be what is known as a 'Softdash' and should also have a "Land Rover Classic" badge on the boot (rather than just "Land Rover"). You have the 3.9 V8 engine - they also came with a 300TDi engine at that age, and a 4.2 V8 in the long wheelbase LSE.
The P38 was the model that followed (1994/5-2002/3 I think?) and came with 2.5D, 4.0 V8 and 4.6 V8 engines.
The L322 is the latest model, 2002-onwards I think.
Have you got any pics?