Can swaybars improve the performance handling of my S70? Has anyone tried it.
Any safe enhancement that I can consider to improve power? Drive a '99 2.0T light turbo (believe it is 5204T engine).

Thanks in advance.

I replaced my stock struts and shocks with Bilstein HD and then put in the IPD swaybar a few weeks later. Bilsteins greatly improved 'directional control' on bumby road, firmed up the ride (had the sport suspension), but not unpleasantly so. However, bumpy roads are very obvious.

Then the swaybars--significant improvement in cornering. I commute up and down from 7200' to 4200' on an interstate through a canyon--there are some curves I felt a little uncomfortable taking at 70mph due to body roll. Totally gone now. Car stays flat and same curves actually feel like they have been straightened out.

IPD will make you a package deal for the swaybars and the Bilsteins. They totally changed the handling of my 850, all for the better--it's like I bought a new car at 105k miles!
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96 850T, Bilstein HD, IPD swaybars

Yes, the swaybars make a world of difference in the S70's handling (tighter cornering and less feeling of the front-end swimming). www.ipdusa.com is where I got mine. I also upgraded the swaybar end links to heavy duty ones from the same company. After I installed swaybars I had some front end rattling over bumps and the worn out end-links were the cause. If you can't find the heavy duty ones on the site, you can call them. They are only a few dollars more than the regular ones.
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1998 S70 T5 Emarald Green Metallic, 2004 V70 2.5T Ruby Red, Previous Owner of Black '94 850 Turbo Wagon