I put a 1970 B body Dana in my 71 Cuda, the B body Dana is basically 1" narrower on each side than an E body Dana. Take all your measurements, including degrees and locations of the spring perches, carefully cut/grind of the perch welds and relocate the perches on the axle housing to match the E body location. I used Hemi springs and put on a stock sway bar set up, works and looks perfect. Check with Dr Diff-- www.doctordiff.com for other options using special brackets.