XR4x4 was only available in hatchback form with 2.8i, 2.9i V6 and then for tax break, 2.0i
4x4 Ghia was available in sapphire form in 2.0i 8v guise
4x4 Ghia Estate was avaiable with 2.8i, 2.9i and 2.0i 8v engines
GLS 4x4 was available in hatchback guise with the 2.9i engine

XR4i was originally 2.8i V6 in a Mk1 3 dor shell, but then in 1991 was again made but with a 2.0i DOHC 8v engine in a normal sierra hatchback shell - these were only 2wd.