Got a reply from Energy Suspension:

-----Original Message-----
From: Allaine Palomer [mailto:hyperflex@energysuspension.com]
Sent: Friday, May 14, 2004 11:00 AM
Subject: RE: 350Z bushing kit

Yes we are completing a kit for it. It will be out in a couple of months.

 

What would the kit consist of?

Prothane already offers oem poly sway bar bushings.

 

When I did the ES Suspension bushing kit for my former Eclipse it came with bushings for the front are rear sway bars, front and rear motor mounts, bushings on the cross member bolt holes, and front and rear control arms. The install was a real b**ch because it took a heavy duty press to get the original bushings out and the new ones in. Taking apart the control arms was a pain too. And then afterwards you gotta install everything back. But was it worth it? Well for the track it was. The stock Mitsu bushings were so mushy these ES ones took care of that. The suspension geometry was able to stay more stable through hard cornering. But for the street it might have not been so good if you care about your daily ride. A lot more street noise was introduced into the cabin through the bushings. The steering wheel shook more because more vibration was being sent through the new motor mounts. And after a while I would get annoying squeaks going over speed bumps because of the control arm bushings. Gotta consider all the pros and cons of this type of mod before doing it because it definitely is not just a bolt on affair.