Ok after some researching and looking at some diagrams I just want some confirmation that I'm right on what I want to do. Instead of buying 13111 O2's, buying extensions, or making my own my plan is this. I plan on swapping the two pins on the pcm for the rear O2 sensors with the front O2 sensors. That way, I can use the plugs for the rears (which are convienently right near where I need them after longtubes) to plug into the front O2 sensors when I install my longtubes next week.

After looking at diagrams for a '98 PCM I've figured out I need to switch pins 1 and 5, then 2 and 6 on the C2 connector. Then I need to switch pins 41 and 46 then 42 and 47 on the same C2 connector.

Is that right?

 

anyone?

 

Looks exactly right on the 98 LS1. I do exactly that on all my LS1 harness conversions.