I have looked at both the speed sensors of my auto gearbox and my w58 which i will be puttng in soon, and i thought that it was possible to just swap the sender units over and away you go. It seems though that my w58 one is significantly bigger that the one in the auto so there is no way that just swapping them over will work. What will i have to do here to sort this out any ideas? I am also wondering if my electronic speedo would have anything to do with the speed sensors or are they still the same as analogue speedos? My dash is all digital. I am sure that they are both mechchanical sensors.

Thanks, James