Steering Column help/info

Hi guys this is my first post on here. I've got a 70 swinger slant 6 car auto on the column manual steering car. I have a 74 duster v8 k-frame PS that I'm going to swap on it. I would prefer to use a on floor shift column but the one I have is for manual steering box out of a 72 swinger. I know there is a difference in lengths between manual and PS boxes. Can I go ahead and swap shafts out of columns and put the longer ps shaft into the manual box column? any help much appreciated? It will be mainly a cruiser with little strip action. 400-450 hp 360. Maybe a manual steering wouldn't be so bad for a cruiser and I wouldn't have to change anything? Also I scored big with the 72 swinger parts car. 8 3/4 and 4 speed out of 68 dart were in it. 200 for the whole car!