I am starting get the death whine from my diff on my 1988 300ce w/335k miles. I believe its a 3.07 ratio, I would like to know if there are are any higher ration diffs that would fit into this w124 chassis...I found a 3.67 out of a NA 300D and that gearing would be beneficial for the type of driving I do.....Thanks in advance....

i have an actual diff from your car..
i changed mine then discovered the whine was from something else..

so let me know.