I have often wondered which models use the same springs and sway bars. This came about after reading some comments here about how "soft" the G37s suspension is.
This is very different than my experience in driving the G37 Sport Sedan.

So.... after spending time *painfully* looking up 24 parts, here is what I found out:



• RWD Sedan: Sport and non-sport use the same front and rear away bars
• RWD Coupe: Sport and non-sport use the same front and rear away bars
• AWD:Coupe & Sedan use unique front and rear sway bars

Springs:
• Each variation have unique springs - nothing is shared between models


For AWD, any RWD front or rear sway bar would be a thicker upgrade.
(assuming it physically fits, I know the rear does, not sure about the front sway bar)

For RWD sport or non-sport model, if you want a bigger sway bar, you will need to look at the aftermarket.

 

Stickied to the top. Good research, Sonic.

If you want to follow up with info on the shocks at some point, that's would be cool.