True dual exhaust and O2 Sensors

[Watergeo at aol.com]

Hello

I'm exploring the possibility of changing from single to true dual exhaust on
my late model Ford truck which appears to have the EEIV and MAF sensor
(California). Do I need to install a second O2 sensor? Would this sensor be
connected parallel to the original or does the EEIV have an input for a
second sensor? I think many (most?) late model mustangs had true dual exhaust
and the controllers are similar I would guess.

Nick Hagen