New Process 205. The 205 is a part time 4WD case, meaning when it's in 2WD the front driveshaft will not receive power. It has 4 stock shift positions, 2WD Hi, 4WD Hi, Neutral, and 4WD Lo. The New Process 205 wasCustom extensively in GM trucks, they were available in their full truck lineup from '69-'80 and then only in K30's from '81-'91.