Quote: I used 93 jeep rotors. You don't need a measurement to place the caliper bracket. Just bolt on the rotors put the pads in the calipers and bolt them to the brackets. Install them over the rotor and it helps if you have someone hold the brake pedal one you have them where you want them, this will square them up to the rotor. Then just tack the brackets on, remove everything and weld them up. Here's some pics from mine.
I used the front rotors from a 2000 Grand Cherokee, Speedway brackets, Autozone calipers and pads. I drilled the rotors for 5/8" studs, mocked it up on the axle, and put shop air to the calipers to hold them in place while welding. My rear lines are flex lines that were also purchased along with the fittings from Speedway.
