Depends what varient of 4x4 we are talking about here, I know the rear is on the Cosworth and XR4x4, as to whether it would fit or not I coulden't be sure as the ratios etc may be different?

Yours will be the DOHC (I4) engine, I know Pintos had Webers fitted but not sure if they were twin choke or not and how this would work on your engine?

Martin