The NP205 is one of the strongest transfer cases ever made with a cast iron case and all gear driven design that makes it nearly indestructible. When it’s paired with an automatic transmission the torque converter basically gives you an unlimited crawl ratio so ultra low range isn’t really needed. When it’s behind a manual transmission those usually had a granny first gear that gave it a super deep first gear ratio. The engines these were paired with were torquey so the NP205 never struggled to