Project BMW E36 M3 came to an end after it went to ICS Performance for Koni shocks, Vogtland springs and TC Kline's Smart DA suspension. - European Car Magazine ...

In the case of E36 M3s with stock gearing (3.15 for 1995 models and 3.23 for 1996-on and M3 Lightweight models), a popular upgrade is a 3.46 or a 3.64 rear end.