Calling all Honda owners!

[Osiris19]

I went to see a really nice 1992 Honda Civic EX today this thing was clean. Only 2 cracks in the body and they were relatively small. Anyways, onto the point.

The only problem with the car was that the speedometer didn't work. I searched around google for a bit and came up with a couple theories. I found something that said it may be the Vehicle Speed Sensor attached to the throttle body that may be wearing from longevity. My dad said it might also be the cables, but the guy who has it said he changed the speedometer twice so it can't be the cables. I was thinking of maybe after I buy it rip the VSS off of a civic in a junk yard and throw it in there.

Any ideas?