This transfer case is compact, light, durable, simple to build and capable. It features dual modes (2wd + 4wd) and dual ranges (Hi + Lo). The high range is direct drive (1:1) and the low range is 2.62:1. The length of the 1980 Dana 300 is ~10-1/2", as measured from the front input face to the rear yoke face. The later version is ~11-5/8" long.