Quote Originally Posted by Dominator View Post
Pedal won't be spongy but may need slightly more travel for same brake effect. Y60 TI came out with twin pot front callipers and when my mate fit them to his ute he did not need to fit a bigger master cylinder so hopefully you will be fine.
Mines a TI Diesel & it doesn't have twin piston calipers. As far as I know, only the EFI 4.2 petral GQ's had em.