Oil sender location is on the block just above the starter. You might need to use a bit of 1/8 inch pipe to extend for a mechanical gauge line and a compression fitting.
http://s61.photobucket.com/user/Jho411/media/IMG_0608.jpg.html
Just above the starter and below the PCV in this picture.

The Temp sender is on the head on the driver side towards the back just about where the rear intake is located and above it. Plumbing fitting to adapt to the mechanical sender.
http://s31.photobucket.com/user/classicgmjunkie/media/three_singles.jpg.html
Follow the wire from the firewall that goes up and over the carb in this picture.


Steve H