I can confirm the u12 rotor is best. 1200 rallycar intially put me onto them with your help re s12+8s

spoke to dba ( I own a auto store) regarding my conversion and he confirms also that u12 is the best option. It fits best in all dimensions other that hat size. You will have to mark and grind some meat off the larger piston bottom area. The hub outer is a good guide to how much because the rotor hub is the same circumference. I've got pics my phone but can't upload them for some reason? I'm having my rotors machined early next week so can post rest of progress then if you like