The 1971-87 C-10 (heavy half ton) 1.25" thick rotors will fit the spindles with the 6087DBK brackets. There are no passenger car rotors that share the same spindle pin bearing sides. If you are looking for a passenger car bolt pattern the only way to do a 4.75" is on a CPP big brake kit This it only works with a 17" or larger wheel. Call us at 800-522-5004. Thanks