how bad of an idea to put this fuel pump in (with the needed modifications) on an otherwise stock fuel setup.. 05 350z.

 

Why do you want to replace it? Old one breaking down...

 

actually incomming procharger application, the procharger wont be installed for 2 or 3 maybe 4 more weeks(due to tuning issues), and i was hoping to maybe get a jump on some of the install and starting on the fuel pump, though idk if it's a good idea to get a 255lph pump on stock application, i've tried looking for info. but found no clear concise yes or no.

 

After the mod I think it would be fine but, its substantially more annoying (sound-wise). I'd leave it alone until you have to use it.

 

as long as you mod it correctly, it will be fine

 

just to claify, with no boost or fmu it will be fine to install on stock injectors and no return