ps. it has a Dana 60. Anyone wanna tell me where I can find a 12-bolt, maybe drum-to-drum?
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FWIW, if that happens to be a Dana from a 66-67 B body (GTX) it will be setting on the leaf springs just about perfect, and the width is about 54in which makes it a very good fit. That's a classic day 3/drag setup. It's stronger than a 12 bolt, and looks like all business under there. If you're doing day 2 I'd leave it.