It depends what size of pistons are in your Wilwood brakes. Most of the Wilwood calipers have tiny pistons which reduces the brake force. So when you install one of their kits, your stopping power goes down. That is why you are having to press harder on the brake pedal. The only way to fix that problem is to redesign the rest of the brake system to match the tiny front brakes. Put the smallest rear wheel cylinders on there that you can find and use the smallest master cylinder piston size.
