Ok i know its been asked a million times, i have been trying to run down and get an O2 bung welded in for my lm2 sensor, well i happen to glance at it while dropping the oil and changing the filter and i see my post cat O2 sensor in there, now to remind you i have one in each header then that one installed and the last one with a fastman simm, can i just put that one on the frame also?