1971 EV2 Dodge Demon "Sizzler"

its an early emissions piece. california emmisions cars. showed up in the rest of the world in later 72 models, and up
???

How does it have anything to do with emissions? Strangest part is the "sensor" is INSIDE the car. Hopefully putting the late model 318 with fuel injection and an OD trans will negate the need for such crap...

j