Viper calipers on B-body rotors will require a spacer behind the brake pads.
Viper calipers on C-body/D150/B150 rotors will require a different outer bearing. I haven't dug around to see if the bearing exists or if a spindle sleeve will be required.

Either set will require careful measuring to be sure the caliper will not contact the wheel.

I think Dr Diff bailed on this application due to low sales.



Building the parts isn't hard, it just takes a little time on manual machines. I've done more challenging conversions.