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Re: Disc Brake Upgrade Reference Thread
I don't have any experience with the '71-'72 crossmembers, but it should beither a 100% bolt up, or no more that drilling one hole on each side and elongating one hole on each side. For that matter you do not have to change the crossmember. The crossmember and control arms are the same from '63-'72. You can simply just change the ball joints and add the disc brake spindles, rotors, calipers, etc.
You will also need a disc/drum master cylinder, proportioning valve, and you may need to change the intermediate pushrod in the booster. I believe the '69 booster would have the long one, and the master more than likely will be designed for the short one. You will have to check that.
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