A step bore MC will work with any caliper.
A strat bore MC will ONLY work with normal NON low drag calipers.
That being said, I am not a fan of step bore master cylinders as their pedal feel is usually terrible.
1.125” bore master cylinder with a
B-Body 12” dual diaphragm vacuum booster.
1.0” bore from a right hand drive 2000 s-10. RAYBESTOS MC390572. If the reservoir doesn’t fit under the hood, exchange the reservoir out with a 2000 Camaro reservoir.
This master bolts right in no mods and actually works AC DELCO Master Cylinder Part # 89056529 or 18M974 (same master)
maliburacing.com
1.125” bore master cylinder from a 2000 Chevrolet Express Van 1500. Switch out the Express Van reservoir with the stock 1984 G-Body reservoir.