yea, for a 98 you will need the 99civic si rear endlinks, function-7 makes nice ball joint endlinks for around 40 bucks rather than 90$ oem ones. stick with your factory front but if you want the type-r front you should be able to use the same endlinks on there now, or just get a energy suspension endlink kit for the front. search for the front on ebay, the rear look at function-7.com