Frank,
Sumos are designed to take Ford Granada rear axle assemblies ( early models) with later models using Ford Sierra assemblies.
There are even some very rare Sumos that had a Jaguar IRS option. Drop Pilgrim a line with your chassis number and they'll tell you which one you'll need.
Try to fit anything else and heavy adaptation and fabricating will be required.
Cheers, and best of luck with your limey kit,
Tony
