probably not, and if so, you probably wouldnt want them because of the old sound wave technology.
People use that board as more of a controller to control a rackmount sound module. There are some small ones that are available too and some of the old ones are not that expensive. Used ones will probably be your best bet. When you have a sound module, you connect it to your board via midi, and the keyboard controls the sounds in the module. You plug your amp into the module instead of the keyboard and the keyboard just sends midi signals. That will give you more sounds than you need.
