You don't have to change any O2 wiring. Just delete the heater codes. Depending on the calibration, the PCM is looking for a return signal from the O2 heaters. Since your O2s don't get grounded from the PCM, it will set codes.
Hi (Name?)
I am not familiar with the 6248 PCM. I have checked all of my stuff and I don't see any reference to it. The 60e and 80e are not pinned the same. Give me your name and e-mail address and I will send the 80e wiring info.
Jeff