Known as the 935-78 / 81, this version of the famous 935 was built by Joest for Momo Moretti. A second example was prepared for John Fitzpatrick Racing which ran there since 1982. It was the period in which the 935, despite being an old model, was modified by various European and American preparers in versions that could differ considerably from the original configurations. The bodywork of the 935-78 / 81 closely resembled the 935/78 used by the official team only in 1978.