Google around and find which MK5 escorts came with similair ratio's if you don't want the extra work of stripping and changing gear sets over, IME most non sporty models (not XR3i, Si, GTi, etc) and not Diesel box's are ok and IIRC all 1.6 and 1.8 hatchbacks are pretty close to the RST ones, ....

S2 RS Turbo
1st 3.15
2nd 1.91
3rd 1.28
4th 0.95
5th 0.76
FD 3.82