For those who have a GM based front or rear disc brake conversion, this the vented disc brake rotor.

Hub center is opened with a CNC mill to fit your hub 4.20".  Sold each.

Rotors are from an 88-91 Chevy / GMC REGULAR cab 4wd K1500 Pickup Truck.

Popular Numbers are

Bendix - 141454

Raybestos - 5977

Aimco - 5568

Napa - 85977