Thanks Mike! Much appreciated. When it comes to checking the spline count can I simply unbolt the axle from from the hub and slide it right all the way out to count them or is there more to it then that?

I've come across a few of them used. Seems like some are Chevy, Ford and IH. I assume there is a difference between them aside from the spline count or would I be assuming wrong?

A 3rd member I don't mind changing myself. I have a friend of mine who is good at changing gears and has some experience with 2 speed rear ends. If I can't find a drop in ready 3rd member with 4:88s he's already told me that he will help me do the gear swap. I've come across a few places that sell gears but I don't have enough knowledge about the rear end on this truck to call some place and tall to someone who isn't experienced and be taken for a ride and buy the wrong parts. Is there a good go to place for gears? I only know what I've posted but am learning lots everyday.

I did go out and try to trouble shoot the lights not working today. I replaced all the glass fuses and just my luck I lost all power... go figure. It's was too cold for me to do anything more today. At least I only messed with one thing so it should be an easy fix.