I have a '87 F350, Crew Cab, Long Bed, 6.9, ZF-5, RWD. It's a non-running project truck. The plan is to make it a capable towing vehicle with 4 wheel drive. It has 4.10 gears and I'd like to run 35's or so. I have sourced a Dana 60 (1990 version, kingpin 4.10), ZF5 4x4 trans (1995 S47), and...