Thank you @
Mishimoto for sending me the prototypes to test fit. Took a few versions but we got there eventually.
The final bracket fits properly on our RHD 86/BRZ with a comfortable distance from the brake lines. No modifications needed for installing the catch can kit now.
Have already tested it on the track. All is good. Catch Can works; Bracket holds tight with no unnecessary contact points. **Thumbsup**