x2 for wheel spacers on an EXTo small IMHO.
Oh and if you have an EX, you'll need to either get wheel spacers or shave your brake caliper down a few mm.
keep your si'sI was going to put hx wheels on my ek hatch, but still dunno yet. I have SI wheels on mines atm. Should I trade SI wheels for the hx? Hx will look good if painted to the color of champion white!