Issues, the early legacys are renowned for destroying turbos. Even if they are well serviced. They are just as highly strung, given they are still a 280 (ish) hp turbocharged Japanese performance tourer, and yes definately 98 only. People seem to think that Japanese cars will run nicely over here, fact of the matter is anything that is considered premium, luxury or any sort of special model (so like, 95% of all Japanese imports) are tuned to run on 100 octaine fuel, so running em here on 98 is less than ideal.
However.
They are retunable, and if you replace the turbo for one from a facelift legacy (vf44/vf45) remove all the oil feed banjo filters and a Gentle retune, you can have one very rapid, reliable and 95 friendly car.
Out of the box, they can be touchy. But its easily remedied