Hello gentlemen,
Could anyone please help clarify what the lowest differential ratios found in the US are, which are bolt-in into a W201 or W124?
Even better if it is a somewhat common model as a opposed to a rare low-volume application. Also, I am only interested in open differentials.

The 190D 2.0 5-speed and 190E 2.6 5-speed came with 3.92 and 3.91 differentials, but those were only available in Europe. The US-spec 2.6 5-speed is very rare and did not receive the 3.92 differential.
The only other cars with these ratios are various W201 and W124 taxi cab models in Europe, I believe.

The 190D 2.5 5-speed, 190E 1.8 5-speed, and 250D came with 3.67 and 3.64 differentials, but once again the 1.8 was only available in Europe, while I am not sure if the 2.5 diesels came with that ratio in the US, not to mention the manual model is quite a rare find nowadays.
Did any cars in the US come with a 3.6x (or higher) differential?

The next step up (down) seems to be a 3.46 differential. Since I am doubtful any of the lower ratios can be readily found in the US, I would really like to at least find this size. It supposedly came in various W201 manual models, though I believe those models received 3.27 and 3.07 ratios in the US.
However, it is also listed as the ratio for 300D NA models.
Can anyone confirm if the OM603 W124 received this differential in the US?

Are there any other low ratio options or models I missed?
For example, I believe R129 differentials are also interchangeable with the W201 and W124, but I have not been able to find much information on their ratios.

Any input is welcome.
Thank you.

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