my car is a 84 2.8 camaro sortcoupe. my quetion is what do i need to swap out the sport coupe gauge cluster with my pre 90 gauge cluster with the oil pressure water temp volt meter tach and speedo all to work. i know i'll probably need sending units for the oil pressure water temp gauges but i dont have a clue as to where i would need to install the sending units on the engine any help would be great thanks guys!

 

Coolant temp sending unit on the 2.8 is located on the block, just behind the A/C compressor bracket. You'll have to remove the compressor and bracket to get to it. Theres only 1 wire connected to it.
The oil pressure sending unit is located just above the oil filter. You'll have to get under the car to change it. When your down there, you should see 2 sensors next to the oil filter. One has a 2 wire connector(this one is on bottom) and the other only has 1 wire(just above the 2 wire sensor). This is the sending unit. You'll probably have to remove the lower one to get to the sending unit.
A little bit of oil will spill out, not much though. Good luck