Well, according to the info that I have, both the Evo and STi had 17" rims stock, so no doubt that it'd work with that just fine, however, rear brakes are typically smaller than front brakes, and this combination might well work with a 16" wheel, though since it would be kind of pointless to go BBK for the rear, but not the front, tghe fronts are going to be what dictates minimum wheel size anyway.
For example, I know that a 15" rim won't make it on the front of the A70, but will work on the rears.