Hahn Racecraft sells kits to turbocharge an RS...
If you don't wanna buy a kit then you will need to piece together everything yourself and possibly fabricate some parts... IMO I would buy a kit or sell it and buy a GST or GSX... And whatever you do, DO NOT buy the kits that are sold on ebay. Some of the headers and simple parts might be ok but beware of the turbos and more complicated parts sold on there...
**EDIT**
Here is a link to their site...
http://www.hahnracecraft.com/