If they are part numbers and not finnis codes then this will narrow it down a bit
AB escort english
AG escort german
BB cortina english then sierra
BG cortina German then sierra
EB capri english
EG capri german
FB fiesta english
FG fiesta german
GB granada englinsh
GG granada German
VB transit english
VG transit german
ZB mk4 zep/zod
ZG Mk4 zep/zod
DT D SERIES TRUCK