I have decided to swap the TBI out for the appropriate 4.3 TBI. Fortunately the salvage yard has a 30 day exchange period, so should not be an issue as long as I can get down there.
I am working on getting the intake / exhaust back on the engine (which is pulled, and nearly rebuilt), and then I am going to pull the cab and its internals off of the frame tomorrow. Once that is done, I am going to start working with the wiring harness. Bill has some helpful stuff over at Binder Planet, and there are other good resources that should help me sift through that.
Here is a link to my truck and the progress I have made thus far. I will ad picks to this album of the TBI swap along the way.
http://s1130.photobucket.com/albums/m537/kjhibbs99/Apache%20Rebuild/