body mounts?
 

i'm from the 60-66 board, but my queston is about 67-72 body mounts. i have been thinking about put 67-72 4x4 chassis under my 63 gmc. my queston is how much of a difference are the body mounts from the 63-66 chassis? any help would be great and if i'm in the wrong board tell me

thanx,
jim