look at these calipers will they fit the celica? http://cgi.ebay.com.au/Brake-Caliper-FR ... 4920wt_905
not as a direct bolt on. you will also need to get supporting discs. i think most use the 205 disc and machine it down. there should be a thread on ozcelica for it. they are the standard 205 brakes
You do realize that this is only one caliper, not a pair, right? The ST205 front brakes are very good, but need more modification if you want to put them on, as rev_head stated too.