I'm curious to know if g37S springs will work on a g37xs sedan. I'm wanting just a slight drop and would rather just use these than aftermarket? can it be done?

 

Yes they will fit.

 

do you know if there is much of a difference in terms of drop, handling, stiffness?

 

I've never seen a published spring rate for the oem springs on either, but that doesnt mean its not out there. GL

 

Springs that are not specifically manufactured to go on an X will give you a slight sag in the rear. Something about the AWD being heavier in the back compared to the RWD S models. Here is a pic of my '12 G37x with Tein S-Tech springs that were made for the S models.

 

Purchased a 2011 G37S for a rebuild, we need; the fans, alternator, pump, and radiator. Are any of these parts interchangeable between the other G37 models, for example can we use the alternator from a 2010 G37x?

 

I am not exactly sure in terms of engine parts because im not very experienced in that area, but I know there are a few parts from 350zs and other models and years of G37s usually fit interchangeably among most models. I know suspension is very easily interchangeable among G37/G35s and 350zs.

What I would do is contact the parts department of your local Infiniti dealership or speak with a mechanic who is experienced in Infinitis. Also, try searching the forum for the specific parts you're looking for because there may already be a thread that has the info you want.