i currently have the FLP headers and Y removed from my car (motor and trans are out), and will be getting dyno tuned in the near future. what is the best location to place O2 bungs for use durring wide band tunning? in the header collector? or the ORP's? or 1 bung after the merge of the Y? or just leave it alone, and shove the tube up the muffler (B&B) like everyone else?