I have an nx 1600 and I'm looking at lowering it and doing some minor visual upgrades. I'm just wondering how close are the suspention systems as well as body paneling marker lights and etc. are between the two cars?

I think they are 100% the same. Besides the motor.

That stuff is the same except for the front bumper spoiler and the rear bumper cover. Suspensions should be the same, I'llhave to look at my parts fiche but it's at work.
Blair

The differences between the NX1600 and the NX2000 are the same as the differences between the "classic" SE-R and the SE.
The NX1600 doesn't have the front spoiler or the side sill extensions that the NX2000 has. Also the NX1600 lacks the rear spoiler.

The suspensions are interchangeable though. But the NX1600 doesn't have thew AD22VF brakes.

And of course the motors are different.

thanks very much for the input