Auto -> 5 Speed Swap. Using 96 ECU. Must change rear O2 sensor???

[okis14]

I swapped my 97 240 to a 5 speed. I'm using a 96 ECU. JWT website says to repin the ECU and replace the rear O2 sensor to an earlier 3 pin one.http://jimwolftechnology.com/w...D.PDF

My question is, what does earlier mean? 89 - 94? or 95 - 96?

The main O2 sensor is a 3 pin one. I'm wondering if just splicing the rear wires to the main one will work.

If I remeber correctly the rear O2 sensor sends a 4.8v (or ohm?) signal every now and then. If the main one does something similiar will it work or throw something else off?

Any ideas?