Yeah i got my kit from IDB. It cost me $1800 and it doesn't include a bigger master cylinder. The parts used are from an RX7 series 6. They use an adapter and re-machine the parts to suit the ae86 struts. They're fairly big, 14 inch wheels don't fit on my car.
I know its a rip off, but i had no other options 2 years ago. I didn't know toymods existed.
BTW, i am looking to replace my master cylinder to accomodate my brakes. What do you recommend?