You can watch eBay for Progressive shocks.....most shocks that fit a Harley will fit the Savage......you need 1/2" or 13mm eyes. You probably want to avoid any that are "heavy duty", as those have really stiff springs for riding double on a Harley.
You can also read this thread for some choices.
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1136924522/0