I’ve recently got a g35 coupe and want aftermarket suspension. However I live in an are with moderate terrain. Any thoughts on aftermarket suspension at stock height? Is it worth it ?

 

You can run aftermarket shocks (eg Koni, Bilstein) with stock springs, which will retain stock height with better dampening. If you just want to to tighten up the handling a set of swaybars (eg Eibach, Hotchkis, Whiteline etc) will do that without any change in ride height.

What are your goals for the car, or what do you want the aftermarket suspension to do for you?