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I was hoping to get a couple of peoples opinions as to wether or not to leave the 8 3/4 rearend in my duster or buy a dana 60 from my dad. The 8 3/4 is a 741 housing, and i have both a 3.55 posi and a 4.56 posi pig for it. The dana 60 is brand new, it was built for an e body, it has a 4.11 posi in it i beleive. My car is a 70 duster with relocated super stock springs already set up for the 8 3/4 with brakes and everything, it has a 440, .040 over, ported and polished 906's with 2.14/ 1.81 valves, 850 holley, 727 with a 4400 rpm stall converter, im hopin the motor to put out about 500 or so at the wheel, and i am doin a mini tub with 13.5" mickey thompson et streets. Down the road i intend on doin a 4 link with a 9" or a moser 60, i am wondering if i will snap the 8 3/4 after a couple runs or if it will hold up for a couple years. The car is gonna be mainly a street/show car, but i will make some runs down the strip, but i want to make sure im not gonna break anything cause there is nothing worse than towing ur car home when you drove it there. I know that there have been a couple of other people in this situation or a very similar one and i was hoping to get some good advice. Thanks Alot for the advice.