'75 Duster B body front brake upgrade impressions wanted

The 11.75’s are a nice upgrade from the original 10.95’s. Just the rotor swap by itself results in about a 9% increase in braking force because of the longer lever arm.

Your ‘75 may already have them, but it would also be a good time to check if your calipers have the A-body 2.6” piston bore or the 2.75” piston bore used by the B/E and later A bodies. I think ‘75 was the swap over year.

I ran 11.75’s on my Challenger for 70k miles of daily driving, they work well. A bunch of that was with 275/40/17’s on the front, and with those tires the braking was pretty darn good. I also ran them on my Duster for awhile, they work great with 11x2.5” drums out back to keep things balanced. The Duster was upgraded to DoctorDiff stage III brakes, I run the 13” cobra style kit now. But the 11.75’s are a great less expensive option. They’re very reliable, and if you do the math on the caliper clamp force they’re capable of more clamp force than the standard Wilwoods too.

And don’t worry about the drop shipping. The 13” rotors were the same way. They took a couple days longer than the rest of the parts that came straight from Cass, but they’re quality parts.