i have a 1970 stepside that is in need of a cab swap. i also have a 1972 donor 2wd pickup. the plan is to put the automatic 2wd cab on the 4wd 4 speed truck. has anyone done a cab swap on these years. how much difference is there between the auto 2wd and the manual 4wd? i already have the motor, tranny, and transer case out of the vehicle. any help is appreciated.