737 Simualtor
The definition of an FNPT is Fixed Navigation Procedure Trainer.
To get as close to the real aircraft as possible, you will need a full motion, level C simulator.
Level C sims, operated by a Type Rating Training Organisation (TRTO) (which then become level D sims) can be used for all the required training for a type rating. The first time that you will fly the real aircraft will be on a revenue (with pax) flight.
Because of this ability, the simulator has to behave exactly the same as the aircraft and has to undergo continuous checks to ensure it fidelity.
That is one of the reasons for the extra cost involved.