[T2] Oil pressure sender

[Richard J]

I'm wanting to order guages for my bus.  I'm getting some VDO guages.  I need to know what sender to get for the oil pressure and oil temperature.  What threading?  There are different options.  I have a stock 1800 type 4. Second question is how do I get the oil pressure sensor to fit with the tin and the distributor right there.  

Thanks for the help.   

Richard Jack
1974 Westy