Derivatives
One experimental Ferguson FF was built in 1968 with a 7 litre (426 cubic inch) Hemi engine imported from Chrysler in the U.S. Further Hemi engine equipped models were not built, due to the limits of the suspension at extremely high speeds, and the cost of importing the Hemi engine into Britain was deemed too great.
An "SP FF" version is rumoured to have been made at some point in the production run. This version was equipped with a 7.2 litre (440 cubic inch) engine with a "Six Pack" induction system (three 2-barrel carburettors) as well as four-wheel drive. Less than ten are assumed to have been built.
Read more about this topic: Jensen FF