What parts in particular? There really aren't that many that are specifiec to only the '98. If you download the parts manuals for all the years you often find that a bit you are after was used for lots of years, both earlier & later. Certainly widens your options when searching.
Also, don't be too afraid of buying bits from outside your local area. With the US dollar so high it could be cheaper for you to buy parts from other countries on places like eBay. Just use regular caution. I got bits from the US when the Oz dollar was worth something and it was cheaper and usually faster than getting them from Australia - even for new parts. Often the going price in other countries is much different to your own. It was cheaper for me to air-freight a complete wheel from the UK than to buy the same part in Australia!