Oil Pressure Test Gauge, A/D or J Type
Overdrive. Custom made adapter fitting,0>600 PSI liquid filled gauge and required connecting fittings. $49.50 + $ 5.50 shipping in US - $11.50 shipping beyond US.
Credit cards accepted via PayPal. For additional details, and to purchase, go to: http://tiny.cc/odgauge
If you're having trouble with your overdrive, this tool will help you diagnose the problem.