im sure the N1 oil pump is good, i neva said it wasnt
all im saying is if ur going to rebuild ur engine and u have ur engine in piece's ur beter of spending that little bit extra and getting some thing better
this is coming from some one who runs a custom machined CNC stainless billet oil pump which has been heat treated
alot of research went into this oil pump the 1st one machined up had some problems with the valve staying closed but with more researching and testing we got it right