question about o2 sensors, CA spec has two, I want one Options

[6strngs]

I have a CA spec car... this means, my car has 2 o2 sensors instead of one. when I go turbo (hopefully very soon) I'm sure the downpipe will only have a slot for one o2 sensor... so, is there like a resistor or something I can do so that my car doesn't freak out from only having one o2 sensor?

[presure2]

just FYI, ive had my 2nd O2 sensor installed in the lower part of my DP (no cat) for almost 2 years now.
ive never had a problem with it throwing codes.
i think i MAY have gotten one, maybe once..lol
(i've had a problem with the wiring for my wideband, which sends a signal to the ecu to replicate the 2nd o2 sensor, but that is a seperate issue that has to do with the plug on my wideband controller, not the ecu or o2 sensor working)
imo the OBDI setup is not as strict on what it requires as far as values from the 2nd o2 as say a OBDII or newer ecu that REQUIRES that thing be placed just so and working PERFECTLY for it not to set a hard code.
also, on our cars, with the cali setup, the 2nd o2 sensor code works on what toyota calls a "two trip detection logic"
basicly, the problem happens, the ecu stores it in memory, but dont throw a code, untill you shut the car off, and start it again, and it sees the same problem again.
also, it will only throw the code when your @ WOT for 2 seconds or more.