brake question

Is the brake booster from the 67 newyorker a direct fit for the 67 fury 3? The newyorker has 3" drums all the way around and the fury has 21/2's, not sure if that will make a difference. Is there any modification needed to a fit on the fury or..... The disk brake swap is on the list of things to do. That list is long one tho.
Author: furyus 67