Engine temp and oil sensor- Noob questions

[Rich77]

Hello All,

My truck is a '77 C10 Scottsdale Sbc400/th350.

I think I've confused myself.

Which oil pressure device do I need- an oil pressure sending unit or a oil pressure sensor?
Can I use both? Does it depend on my gauges?

Also, which temp device do I need- an engine coolant temperature sensor or a cooling temperature sending unit?

Thank you for any help!

 

[85K304SPD]

I think the only option to choose from is if you have a gauge or just a warning light.

 

[fast 99]

oil pressure switch, temperature sender, sensors are for computers.

Should be able to look up the application and get correct parts. I don't work for Rock auto but after you figure out the site they have a good search engine.