i just purchased a safc II and want to put a wideband on my N/A 87 but i have a header and dual exhaust all the way back and was wonder what i should do?? just put the wideband in one side and hope for the best or can i splice two sensors to one gauge in parallel and get the average on the gauge or do i need two sensors and two gauges?? looking to go the cheapest route possible. thanks