The difference is all down to the gearing and axle ratio. I change ratios often in both the Mustang and (not so often) the Cobra - going from, say, 3.07 to 3.31 is like night and day. The MC needs longer gearing because it's missing an overdriven top. 5th in both the MC and the 330i, with which it shares the gearbox, is direct.
Fit a 6 speed box 👍
[GROWING OLD IS COMPULSARY ---- GROWING UP IS OPTIONAL
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