This is what I've found...
4 cylinder
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B6-ME & B6-DE / F(2)5M-R
Gear Ratios (Input:Output)
1st 3.416:1
2nd 1.842:1
3rd 1.290:1
4th 0.918:1
5th 0.731:1
Final Drive 4.105:1
B8 (1.8 SOHC) / F(2)5M-R
Gear Ratios (Input:Output)
1st 3.416:1
2nd 1.842:1
3rd 1.290:1
4th 0.918:1
5th 0.731:1
Final Drive 3.619:1
Note that these engines came in the hatch (B6) and the 4 door sedan(B8) Mazda 323. The only difference is the FD ratio. The sedan trans offers lower cruising speeds and longer gears.
BP (1.8 DOHC) / G(2)5M-R
Gear Ratios (Input:Output)
1st 3.307:1
2nd 1.833:1
3rd 1.310:1
4th 1.030:1
5th 0.795:1
Final Drive 4.105:1
This engine only came in the 'performance' Protege (GT or LX, depending where you live), Escort GT,Tracer LTS, and all the other BP cars. It is a G series trans, and the only G case I know of that fits on B engines. It offers closer, shorter gears for acceleration.
The Kia Sephia transmission
Gear Ratios (Input:Output)
1st 3.307:1
2nd 1.833:1
3rd 1.310:1
4th 1.030:1
5th 0.795:1
Final Drive 4.105:1
Uses 28 spline axles (K series are 28 as well), beefier diff, and the Quaiffe and MSP LSD fits with a little modification.
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6 cylinder
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MX-3 (K8) & Probe GT (KLDE) / G(5)M-R
Gear Ratios (Input:Output)
1st 3.307:1
2nd 1.833:1
3rd 1.310:1
4th 1.030:1
5th 0.795:1
Final Drive 4.388:1
Short acceleration gears. There is some controversy over some of the later model PGT's getting a 4.105 FD. Ford is retarded and can't tell me the ratios, so I guess you'll have to keep pulling them apart and counting teeth. For now, if I were you, I'd assume they all have the 4.388 FD. Its much more likely that previous owners swapped in the MX-6 trans for the longer gears, than Ford put them in there OEM without someone finding that out for sure.
MX-6 (KL-DE) & 626 (KL-DE) / G(5)M-R
Gear Ratios (Input:Output)
1st 3.307:1
2nd 1.833:1
3rd 1.310:1
4th 1.030:1
5th 0.795:1
Final Drive 4.105:1
Same as the MX-3 GS (K8) transmission, just longer gears from the FD ratio.
MX-6 (FS) & 626 (FS) / G(2)5M-R
Gear Ratios (Input:Output)
1st 3.307:1
2nd 1.833:1
3rd 1.233:1
4th 0.914:1
5th 0.717:1
Final Drive 4.105:1