You can't just use a wideband sensor with a stock ECU. The AE86/AE82 O2 sensor would be putting out a signla of 0-1volts. The 5 wire wideband sensor puts out a 5volt signal from memory. So the signals are not compatable without a trick electronics box.
I have a wideband sensor with its own stand alone box and display. I use this as a portable device to tune any car I'm working on. For people interested in such things, you can also get a similar kit to perminently have in your car, as a display.
ECU's that actualy use a wideband sensor at MoTeC, Autronic, Adaptronic and a few others, and some new VW.
As for using a 5 wire wideband sensor, via trick box to change the signal to 0 - 1volt, to be used by a old Toyota ECU, hmmmm... just outside of my experience and knowledge. It may work.