The Wilwood ST DP6A caliper in the 1.62/1.38/1.38 layout is listed with a .38" rotor width in this configuration. The description references the reinforced triple-bridge construction with five bridge bolts, forged aluminum six-piston body, and stainless steel pistons with high-temp seals, and notes the DP6A platform's acceptance of rotors up to 13" across the supported width range for custom and competition braking setups.
Wilwood ST DP6 Caliper 1.62/1.38/1.38 .38 Rotor