The Advance Adapter Atlas II Transfer Case is the Ultimate replacement case for Early Broncos. With a 3.8 or optional 4.3 to 1 low range it gives the benefits of lower gears for off road crawling and allows for higher gears in the axles to maintain freeway comfort and gas mileage. Of course, if this transfer case is combined with low axle gears it provides excellent slow speed traction and control. With its twin stick shifter, independent control of front and rear output is available. Equipped with shift on the fly capability. Unit comes fully assembled ready to be installed with CV style output yokes. Requires a 2" body lift. With this case, a set of lockers and our Ultimate Suspension, you can be crawlin' with the big dogs!