Disks are bigger - 275x25 - compared to the 1a 243x18 and 1b 258x22 ones. Given that I guess you'll need at least 15" wheels to go over them.
No idea about the caliper bracket compatibility though
The brakes on my Corola T Sport are crap, so I wouldn't bother to be honest! You'd be better off looking at the usual Celcica brake upgrades... or just give you mk1 brakes a refurb with some decent pads.
if they are free then get them and see if they fit. i doubt anyone else will have tried it yet, so the only way to be sure is to try it out for yourself.