I have an 8 3/4 Rear end, 3.91 Gears, Spool, 742 Case, Drum Brakes, Caltrac Mono Leafs that sit 1.5" lower that stock, Front section is 1/2" Longer at 21.5" for bigger tires. Caltrac bars & Rancho 9000 Shocks. Driveshaft to go with it is 4" with 7260 Spicer U Joints New trans yoke installed as...