I bough Water and Oil temp. gauges and a Clock replacement Pod.
Where should I install the sending units, and also does anybody have any tips on where to go through the firewall?
There is a giant wiring harness with big ass grommet under the driver's side of the dash. You can just poke a hole in the rubber with a screwdriver. It is right above the clutch pedal.
I used the same gromet for mine. for the sending units, i just went to advanced auto and bought a new thermostat housing that holds a sending unit for the water temperature gauge, and for the oil i just T'd into the stock one with some pipe i bought from home depot.
yep. for oil, the stock sending unit is 1/4 pipe thread, IIRC. many aftermarket senders are 1/8". might need a small extension to get the senders and tee away from the motor.
is the coolant gauge mechanical? if so, you might need a good sized hole to get the bulbous sender through. you can relocate the stock sender to the rear of the lower intake and put the new sender in the stock location (the rear intake location is not as accurate temp wise).