IIRC the unicast B body 11.75" with First Gen Viper / Brembo caliper clears 15" wheels. There might be some that don't clear. Click on the link below then click on the picture of the Road Runner. Brads70 has the Viper caliper on his 70 Challenger using 73C body spindle with 1.25" x 11.75" C body rotor and a mini lite type wheel also.
