temp sensor thread sizes

[V8cortina]

I'm using an edlelbrock performer manifold on my rv8 powered cortina, the temp sensor thread is the same as the sd1 and at the moment i'm using an sd1 sender but its not quite the right resistance for my gauge, the gauge i'm using is a cyberdyne digital (as are all the gauges), the sender supplied with the gauge is the same thread as the ford pinto senders, this is somewhat smaller than the the threaded hole in the manifold, think automotive sell adaptors but they want to know what the thread sizes are, i have no idea!!

So........does anyone know what thread type and sizes are used on the rv8 and the ford pinto?