Where to find NP205?

[1969k10stepside]

Well,I am on a mission to find a np 205 t case for my shortbed K10.I havent had much luck finding just a transfer case locally and any I find online are to far away to pick up and they cant be shipped because of the weight.I am now considering buying a complete truck just for the transfer case.Ok,and now the question....What Chevy or GMC trucks came with a np 205 stock?I know they were in 71-72 4x4s stock and they were in 73-87's with a manual tranny,correct?But what years did they come with the NP205 with an automatic tranny?I need to know what years of trucks to concentrate my search on so I can find one.All the trucks I have found have only turned out to have Np203 t-cases and I am not putting one of those in my shortbed.I guess if I still cant get one I will shove in of my spare rockwell T221's in it till I do find one but the longer I am without it the longer the truck is apart and I am trying to get it back together ASAP.So if someone could tell me what years and models to look for I would really apprectiate it.