The quickest way to tell which axle your Bronco has is to look at the top of the steering knuckles where the Front End Housing is connected to the Knuckle.  On a Dana 44, you will see a large castle nut threaded onto a ball joint.  On a Dana 30, you will see a king pin cap with four bolts threaded down into the top of the knuckle.

Dana 30 Axle:

Dana 30: 1966-1971-1/2 Ford Bronco

Dana 30: 1966-1971-1/2 Ford Bronco

Dana 44 Axle:

Dana 44: 1971-1977 Ford Bronco

Dana 44: 1971-1977 Ford Bronco

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Welcome to the Bronco Corral. As a long time Ford Truck enthusiast, I've been a fan of the Ford Bronco and Bronco II. In fact, I've completely rebuilt a Bronco II of my own. The Bronco Corral originally started as the Bronco II Corral, but in 2020 I decided to expand it to include all Ford Bronco's, and welcome the upcoming 2021 Ford Bronco. Thanks for stopping.