son of a.......
didn't want to sound dumb/argue; so research...more research... found this,
http://forums.nicoclub.com/1985-nissan-720-speedometer-cable-t557430.html
referenced into oreilly and got,
http://www.oreillyauto.com/site/c/detail/PIO0/CA3080.oap?ck=Search_0911706_-1_2975&keyword=0911706&doInterchangeSearch=true
so, hopefully they can get that instead. which looks a hell-a-lot closer to what it should be, and see if they price match. if not rockauto it is.
stupid oreilly website.....
EDIT:
both of the above cables will NOT work. I ended up having to go to pick'n pull to get the cable off the original car. I talked to a person who works at baxter; he informed me that no aftermarket speedo cable exists for this era of trucks. Dont know the validity of that, but Oreilly's and Baxter both have bad part numbers.