78 F250 Lift Kit springs?
 

If got a reg cab 78 f250 4x4 auto.dana 44frnt dana 60 rear.my buddy says he has set of leaf springs front and back off of a truck he bought for parts.trucks gone but he kept motor tranny rear ends and the springs.he says it had a 8in lift on it.i doubt that cause ive only seen 4 and 6in ones.but hes a chevy guy he prob dont know.so id says its a 6in.but how do i know those springs have 6 inches of lift to them.is there a way to measure them and tell how much they have without putting them on.he says they were on an 79 f250.any help would be appreciated.THANKS GUYS