The SLS system on these has a reputation for being a headache and I would think you don't really want the system failing on the highway due to a sphere rupture or a strut seal/line blow out. Similar to Porsche 959 Komforts it is not uncommon to see these replaced with coilovers.
wow - these are so rare and only 31k miles. Car interior looks consistent with those miles. This is also the best interior. many you see have leather seat inserts and door panels but the Houndstooth fabric on the centers and door panels looks much better and is so period correct.