After many hours of searching and reading, I think the general opinion is that the Dana 44 (from an 70 ish) is no better than my 90 10 Bolt as far as durability. I have a chance to get a 14 FF with 4:10 gears and 2 Dana 44's one is open with 3:73 6 Lug and the other has a Detroit with warn shafts , 8 lug and 4:10 gears. Also in the deal is 12 bolt rear with 3:73. I'm looking to upgrade my K5 and will definitely use the 14 ff in the rear. Is it worth the time to put in the Dana 44?