New Guy From The South

Just wanted to say HI everyone! I just picked up this 2003 Marauder 800 a few of months ago. This is the first motorcycle I've ever owned and this thing's a blast!!!. However, I don't think I'm gonna be able to leave it (stock) alone. I recently installed a Memphis Shade windshield, but I'd like to give it a little more "sound" and a little more power as well.....any suggestions???