I THINK I AM COVERED IN THE BRAKES DEPT. ROCKETEER PERFORMANCE IN CALI MAKE A 4 WHEEL 13" 4 PISTON WILWOOD KIT. BUT I THINK I MIGHT NEED A NEW CAGE BY THE TIME THE CAR IS READY. ITS CHROMOLY AND IT WAS BUILT ABOUT 6 YEARS AGO AND LAST CERTIFIED(LOG BOOK) IN 2001. I HAVE THE SPECS AT HOME. I'LL POST THEM LATER. THIS IS ALL NEW TO ME SO ANY ADVICE WOULD BE SUPER!!! LATER TOYOTA DUDES