>Hey guys can anyone tell me what sending unit I need for the gauge in the picture.
This one:
http://www.autoricambi.us/cgi/commerce. ... ey=LU8-047
> where on the motor does it hook up to and what is involved in wiring it up.
It goes where the light's sender is now. The light's sender goes in a hole in the front side of the oil filter block that now has a plug in it.
You need to run wire to the gauge, you can get everything else from the other gauges (power, ground, power for the light).
Look at the wiring diagram for an early car and you can figure out which wire is which. They are online at:
http://www.artigue.com