Locations For Temp Sensors

While my car is still off the road, I'm going through various different things making sure they're done right before really starting to put miles on it (trans is in the shop...as a start). I have a 1999 Mustang GT. I'm wanting to put 3 gauges in my car... Oil Pressure, AFR, and Water temp. I'm going to use Auto Meter Cobalt electric gauges. I have no idea where in the engine bay to put the sending units for the oil pressure and water temp gauges. Hoping you guys and gals might have some idea as to where. If you have pictures, that'd be really helpful as I'm a visual person...

Thank you!

Shortly after I had posted this, I found an article talking about the drain plug. I believe for the oil pressure, I'm going to pick up one of those oil filter plates that allow you to tap in a couple of devices right at the filter. Is that location an accurate location for oil pressure?