I'm planning to swap in a TBI system on my 63 comet with a 302 with Doug's tri y headers. The car will be getting a new exhaust soon and I need to know where to put the O2 bung. Should I put it just behind one of the collectors, or should I have an h pipe put in with a bung so that both banks can be monitored? I plan to run a heated O2 sensor, BTW.