I put the CPP 5 on 4-3/4 (to match the 10 bolt rearend) lug kit on my '48 and the only problem I had was the brake lines were too short. I had to extend the factory bracket so it wouldn't pinch closed the hoses when turned stop to stop.
My experience with CPP wasn't quite so pleasant.
1. The aluminum spacer holes did not align with the hub from the front brakes causing misalignment and runout in the front wheels.
2. The brake actuator rod on the Power Brake Booster #4754BB is too long.
3. The Master Cylinder bracket is not correct for this vehicle. It hits the cross member and must be modified to mount securely.
4. Both the master cylinder and proportioning valve leaked around the plugs that were already installed.
5. Both rotors were warped and had to be turned.
I wrote all of this in a letter to them and have yet to receive the courtesy of a response. Buyer beware.
