The only problem with these are that they are in line with the original bearing carrier, these are OK if you have enough clearance behind the bracket.
With the Roadster the upper shock/arm mount is in the way. Thats why the uprights are different for disc or drum.
What is needed is a bracket that keeps the bearing carrier in the original position but has the caliper mounts at 90°.
A bit like our ones
ATB
John