coolant sensor and electric choke thermostat

[capev86]

i managed to get my 72 burb running after the 80's Q-jet swap, but.....

hoping to use the electric thermostat and wiring from my dad's 84 burb in my 72. can i use the 2 prong coolant temp sensor from the 84 to power the stock 72 temp gauge or is the resistance range different? it looks like i will have to leave excess wire when i splice it in so i can swap the 406sbc which has the sensor near the back end of the driver side whereas the stock 307 has the sensor mounted between cylinder 6 and 8. also, how do i wire in the 2 wires to a system that only has one wire to begin with. any and all input would be great....

thanks!