This bellhousing is S.F.I. 6.1 certified which is required by many sanctioning bodies for cars running 11.49 or faster in the quarter mile. This bellhousing is a universal fit bellhousing and is not vehicle specific. The Quick Time bellhousings are produced using a unique spin forming process which results in a very high-strength material. This high material strength allows the Quick Time bellhousings to be lightweight while maintaining the protection you desire.Fits:All RB20 variationsRB25DERB25DETRB26DERB26DETTRB30ERB30ET