Comparison of Dana 60 (S60) - Ford 9" - Chevy 12 bolt

Not directly Mopar, but I found this interesting and relevant - compares weights, power used, etc. for these 3 rear ends (too bad they didn't put an 8 3/4" in to complete things):

www.hotrod.com/articles/ccrp-0806-chevy-chevelle-rear-axle-swap/