Mine was approx 1500 drive in drive out. Regardless of diff condition most early s2000 would have close to or more than 100k on the diff, so once your diff is apart it makes sense to rebuild it. I replaced seals, crush collar, front and rear bearings changed diff fluid twice, once after the first 1000kms of run in and had the yellow jacket speed calibrated. So drive in drive out for a complete build and speed calibrated budget 1200/1500.