Dakota Rear in 72 Dart

Was at the local pick a part today and scavenged some parts....while there I was looking at some 1st gen Dak's and was wondering if they would fit under the Dart without narrowing...perches etc. are no problem...I searched but could not find any dimensions for width...all of them were 8.25's with 5 on 4.5 I believe...as I read somewhere they are 5 on 4.75...never heard of that but like I said read it somewhere on here...I really dont want to run a phurd rear under it...but they are plentiful with rear disks...even if you have to shorten it...