Okay fairly newly acquired 84 z28 HO. The carb and intake have been replaced with a performer and a holley (600 I think) vacum sec (and I know the engine was rebuilt, but have no idea what other mods may have been done to it). So all the wires that get controlled by all the sensors to the carb aren't there. My question is do the Oxygen sensor or the CTS do anything now? Reason I ask, the CTS broken, so I need to know if I need a new one. Also, my fan, I believe is hard wired, cause it comes on when the ignition does, and never shuts off, which is fine with me, but is that a problem (single electric fan).

Thanks in advance for any help