A front Dana 60 from a '94 F-350 was built by Sun Ray Engineering and is filled with 5.13 gears and an ARB Air Locker. Whoa power comes in the form of Chevy 1/2-ton disc brakes. An NV4500 is attached behind a Centerforce dual-friction clutch. The mighty steed has three different gear-reducing appliances: an Atlas at 3.8:1, a Klune Goliath at 2.72:1, and an NV4500 at 5.6:1. Twenty forward gears and a 297:1 crawl ratio. Ooh!