Tom
I believe that rumours of the death of the 1990 VSS are just that. I believe the VSS for post-90 cars is different.
I believe the 90 VSS is Standard Motor Products SC6 - just like this one...
http://www.ebay.com/itm/SC6-Speed-Se...a82c83&vxp=mtr
If not - I just ordered the wrong part....
Glenn