Some 101FCs were produced with a PTO powered Nokken capstan winch mounted on the chassis at the centre of the vehicle, allowing winching from either the front or rear. Another variation on a small number of pre-production vehicles was the addition of a trailer with an axle driven from the PTO, creating a 6x6 vehicle, this adaptation was abandoned before full production when it was discovered that the trailer had a propensity to push the vehicle onto its side when driven over rough terrain.