Has anyone swapped out their coorperate 12 bolt for a 14 bolt FF and taken the driveshaft measurements how much it changes? I currently have a 12 bolt that I converted the pinion yoke to a 1350 u- joint, so I won't have to change the u joint if I bolt a 14FF under there... But I've heard people saying that the driveshaft length will change? How much? Are we talkin' like an inch or what? Thanks in advance! [Real Men Don't Care About Gas Mileage Or Rapid Tire Wear!] 1972 K/5 Ryan B.