In case anyone decides to look. I plan on using the a channel to convert my UEGO (no digital readout) to 0-1 for the sole purpose of reading it on a cheap AF gauge. While running the software and data logging i'll be able to see it in high resolution. I think I can just splice the UEGO output into the AUX and A channel inputs.
One cal for gasoline and one for E85. It turns out to be pretty easy to do the switch once the calibrations are in place. I drain the tank when I do it but if the tank was pretty low and I filled up with a other fuel I could just switch cals and be close enough to run just fine.