can't happen. GM brakes(even the D44 and 10 bolt) the knuckles are designed for the large single piston caliper. There is an indent in the knuckle to accept the caliper. Ford knuckles do not have that. You may be able to install the 3/4 ton single piston caliper off of a Chevy on the axle, but I didn't go that route because I figured, "I am upgrading everything by installing this, why would I then downgrade the brakes?" Gave me an excuse to buy some H1 rims