Should I swap '72 sbp discs to '73 bbp discs?

My '72 Swinger has the small bolt pattern power front discs/rear drums, and I got a vintage set of Keystone Klassics for it that I'd like to use. But I also recently bought a '73 Swinger parts car that has the big bolt pattern power front discs/rear drums. Are there safety/performance reasons to do a swap from sbp discs to the bbp discs?