just a few questions about wiring

So Dave, what do i need to find a torque converter from? What year models had the same size crank register as the 5.9?
I did find the other O2 sensor wire. the sensor was missing from that one. Still going over this wiring harness again and again. I haven't cut the first wire yet. I want to do it right the first time. I hate splicing wires where it isn't necessary. I want this to be neat and clean when it's done.
Tom