check against the seal kits for a jza80/supra in epc. would be the same. Haven't read any where that there is a difference in seal kits, but then again, it may just be a small change in the kit that is noted. I would probably go for the later kit.
JZA80 uses different seal kit, pistons, etc.
So the JZA80 caliper might roughly be the same size, and take the same pad, but lots of other things seem to be different
I am looking for an answer to this also.
Another question; I would like to find a way to purchase front and rear rebuild kits for the ST205 calipers here in the USA or someone willing to ship.