Not 100% sure what year they changed to that sender style, but if you look at the speedometer face in the car the diff is in, the later ones with more pulses like that one pictured have a speedometer number something like k24364 (I made up that number...but it's basically pulses per km). The earlier electronic ones 1986 to pre-abs were something like k6241 pulses per km. I think the change-over might have been in about 1990. Just some more info if somebody has a car with a diff in it and they offer it to you, something to check.
