4x4 Conversion on 71 Cheyenne

[McNugget]

I have 1971 Chevy Cheyenne that I am trying to convert to 4x4. I have frame with NP205 transfer case and automatic transmission. I am still looking for the front driveshaft, but my question is, how long will the conversion take? At first I just want to mount everything onto the new frame, cause I will not have the front driveshaft or linkage for the transfer case, but I am going to worry about that part later. I just need to get my truck on this frame and get rid of the 2WD frame asap. Does anyone have any tips? just about everything is on the frame except cab mounts...?