Originally Posted by
Brendan
I use Sierra Cosworth 4x4 calipers and disks on my FRST, you need to space out the calipers with 4mM washer and there you go! It is quite easy! I can email pictures if you want! PM me email address. The difference for me between this setup and up rated disks means the car will happily sustain heavy braking for much longer. To do this you WILL require at least 15” wheels.
I now use Tar-ox disks though and have had made my own pistons from marine grade stainless steel so it will never rust and or seize.
But the basic upgrade to Sierra Cosworth 4x4 calipers is quite cheap and easy, especially if you already have 15” wheels or bigger
i used a cvh head bolt washer to space my calipers it worked perfectly