TRD Aurion calipers are in however still waiting for feedback on the progress of the RDA rotors.
In a bid to keep costs down, rather than modifying the caliper (to convert it from a banjo bolt setup to whatever Toyota usually use) I will ask them to modify the brake line instead. Given I was going to replace the brake lines anyway, this is a more cost effective solution. I just need to confirm a few details at a wrecker first, otherwise I will need to buy Toyota Genuine and then have the lines modified (which will cost a small, large fortune); which is not an option I really want to take.
Anthony + The Viking has confirmed that I will need HIGH impedance injectors for this as well.