whats the difference bteween a n1 and a normal gtr pump..?

this is the 4th thread about pumps your involved in will someone help him out poor guys gonna fill the forum with oil pump questions

The mechanical side of things are the same. The only difference externally with the N1 is where the oil pressure relief spring cap screws in , I think the std one is flush with the lower rail of the pump and the N1 version projects below the rail on the crank case side . The pressure relief spring is rated higher to create a higher pressure and to also maintain that pressure (obviously) Im not sure if the N1 has a more durable drive or whether the earlier 32 cranks can still wear the drive during high rpm due to the small key on the nose of the crank