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Message: [QUOTE="blaze42069, post: 1057578, member: 1114"] Holy hell guys why make stuff difficult?? I used 1999 e350 rotors which has the same bolt pattern as obs yet is the same diameter and measurements as the 99-04 superduty rotor. I used 2004 rear superduty calipers and fabbed brackets to mount the SD caliper mounting bracket to the obs diff. Easy peasy and the stock master cylinder was good enough to handle the bigger brakes and it was a huge difference. I also prefer the SD calipers due to having dual pistons to the cadillac's single piston. I also couldn't find a ebrake bracket to activate the ebrake on the cadillac calipers. Apparently they don't make new brackets and I couldn't find any used ones. This was a good upgrade but 05+ brakes are even better. On edit: there was some minor grinding of the ebrake shoes to fit around the obs hubs too. But i eventually got them in too. [/QUOTE]

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