Editing Opel Senator (section)

=== Variants ===
A [[four-wheel drive]] conversion was also available, engineered by [[Ferguson Research Ltd.|Ferguson]], who had previously provided similar modifications for the [[Jensen FF]]. Rather expensive, this could also be retrofitted to an existing car.<ref name="fergy">{{cite journal | journal = [[#AR82|Automobil Revue '82]] | title = Hat der Vierradantrieb eine Zukunft?/L'avenir des quatre roues motrices? |trans-title=Does four-wheel drive have a future? | last = Frère | first = Paul | language = de, fr | page = 101 }}</ref> The system uses a [[Viscous coupling unit|viscous coupling]] to distribute power with a 60/40 rearward bias, to improve traction while maintaining the Senator's handling characteristics.<ref>{{cite magazine | magazine = [[Autoweek]] | last = Kacher | first = Georg | page = 8 | date = 24 August 1981 | title = All-wheel-drive Senator | issn = 0192-9674 | volume = 31 | number = 34 | publisher = Crain Press Inc. }}</ref> These were used by [[British Forces Germany]] under the [[BRIXMIS]] (British Commanders' in Chief Mission to the Soviet Forces in Germany) operations for the collection of technical intelligence. The same kit was also used by [[Bitter Cars]] for a four-wheel-drive version of their SC coupé, beginning in the end of 1981.<ref name="fergy"/>

A limited edition convertible edition was also available in Germany, where the company "Keinath" reinforced the car heavily, and this added to the all round weight to the car.
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