Hi guys,

How does the later-model W123 aluminum box transmission compare to the earlier W123 slope back iron box transmission? Is one more desirable than the other? Is one more durable than the other? Does one shift better?

Thanks,

Packman

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83 240D - 4 speed manual - Manilla Beige
189K miles, Tachometer mod, cool wooden shift knob from PeachParts, CocoMats, Original factory paint, manual windows, manual sunroof. Starting to add AudioWrap to this car too!