hunt4steve,
I do not understand what you are implying.
As far as I know, all Toyota Hilux, 4Runner, T100, and Tundra trucks, 2WD or 4WD, have access for either a 24mm (small bore / 1979-95 gear drive t/case) or a 34mm (large bore / 1985+ chain drive) with a 22x1.50 threaded mechanical drive speedometer sending unit.
With this 24mm or 34mm bore mechanical speedometer unit installed, our Marlin Crawler Vehicle Speed Sensor will directly thread onto the male 22x1.50 thread of the mechanical speedometer sender used.
What was it that you are trying to do?
Regards,
BigMike