i've got a 96 and love it, i've had to replace an oil pressure switch, the replacement is an upgraded switch so should be a problem again.
top water tank sprang a leak, you might want to change this before it blows, it could be a problem it went a long way from home. it's a good excuse to change the coolant anyway. or have it done with the service.
clutch slave cylinder are prone to blowing seals, there's plenty of after market replacement cylinders around, i took mine to a brake shop and had a stainless steel sleeve put in and a better seal out of a mini.
probably the first handling upgrade is have the sag set, if you've still got the original springs you'll have to wind in maximum preload on the rear and minimum on the front to get it close to right, the original springs need to be replaced, rear is too light and front too heavy. contact Jason at
he's doing a rear shock refurb and replacement spring kit for me for a very reasonable price
then take it for a ride and see what you think, it's hard to recommend too much without your impressions, some people like the stable steering others want it to steer faster and give up some stability
there are thousands of performance upgrades available, you can replace virtually every part on the bike. before you jump into anything though read all of shazaam's posts in the hall of wisdom, most mods have a downside and some are detrimental.
here's a picture of mine