If it's just a wire any wire will work. Cut the plug off the oxygen sensor and wire it direct.

 

I actually think the harness that is on it is from a 5.0L/305. It had a power steering lead which the 5.8L/351 does not need. The HEGO lead is supposed to be in the bundle with the starter sol. lead (which doesn't exist either). But the starter sol. relay <-> starter sol. is wired independently. Thanks for the link to the chart ymeski56. I've been looking and couldn't find one. I think I have found a shop here in N. Texas that can assist me with it if I can't figure it out.