7 1/4 axel swap

Good Day, i have a 67 dart with the small bolt pattern and brakes. I also have a newer, not sure of the year, 7 1/4 with the big brakes and bolt pattern that has been completely gone thru. It looks brand new. I would love to use my small pattern axels on the new one. Will they interchange? The research I've done so far seems to be bearings are the real difference. Don't want to get two different bolt pattern wheels, the front is already the small disc units. Appreciate any/all input.