You need these(see link). When I bought my '99 GSX, I had to buy a set bc the previous owner sold them. I got them off ebay for $100. I considered that a steal at the time. I see them go for $100 each sometimes. $135 for the ones in the link.
http://cgi.ebay.com/ebaymotors/97-98...21215159QQrdZ1