I wish I had a Super 8 to put this exhaust on it:
http://www.yoshimura-rd.com/ps-3925-1493-trc-stainlesscarbon-full-system.aspxThat's if you have $400 bucks to blow. But for some cheap stuff get a Dr Pulley variator, Dr Pulley weights ( 2 grams lighter if you want more speed at takeoff, but you will lose top end. 2 grams heavier if you want more top end, but slower at take off.), then a red MRP clutch. The clutch has more pad so it engages faster. Buy a Nology coil wire and an NGK iridium sparkplug. Also a racing CDI. That should be good for now (you're already close to $1000 bucks!). The biggest bang for your buck are the weights and clutch. All others can be purchased with future pay checks. There's a whole lot more you can do but I think this is a good starting point.
PS- look on a dealer website first then look on Ebay. Ebay usually beats them but some things are sent from overseas. Good luck!
PSS- Youtube has lots of videos on how to do these things.