Engine.Are these gauges for the engine or the trans?
There's an oil pressure port right above the oil filter, or you can tee off the oil pressure port behind the distributor.
For the temp, you want to be as near the thermostat as possible, but on the engine side, not the radiator side. The TBI thermostat housing had tapped threads, that makes it easy.
I just replaced my water pump and it had an area for a fitting on it. I ended up using that. If I had to guess it was part emissions maybe? My truck had it all removed when I got it. I found the spot on the drivers side of the head but it had a plug that was pretty damaged and I couldn’t get it out so I opted for the spot on the water pump.
As for the oil I’ll use those two spots. Is one better for pressure vs temp?
I’ve only got my water temp gauge so far so if there is better gauges to grab let me know. Just had so much trouble with my coolant I wanted to know exactly what it is running.