Speedo issues

[Jsherman2037]

So my 97 GT speedometer and odometer were not working so I went and changed out the VSS and the gauge inside the cluster as it was old as well. So started driving everything is working with the exception of the speedometer. It’s as if it’s in fast forward and although I’m doing 10 is says 150 at which point the engine cuts off…..kinda of stuck as there are no engine lights indicating a different issue. Any thoughts?