the stanza discs are 9.5" which is pretty big compared to stock and the calipers are a fair bit bigger too. im not sure what size 180b are but if you think yours are small maybe there 180b. you can go to U12 pintara discs (10.5") with hilux 4spots if you really want to go to extremes, this requires some machining of disc and calipers but if you want to know how to do this tell me ad ill get my brother to explain it cause hes done it recently. best combo for master and booster as far as i know is sunny booster and urvan master (also what my brothers got) unfortunatly i cant do these discs for rallying cause too much machining