You just said a whole bunch of magic words.
Tom (TomsSVX) has tried fitting STi Brembo's to the SVX. They will actually bolt up no problem, but the mounting point for the SVX is farther out, so we would need a custom rotor. And since the 4-pot Brembo caliper is sized for a smaller rotor, it wouldn't work too well. I think Tom's working on ideas of installing Willwood brakes.
With that issue, I'd say the Porsche 6-piston would be a better fit to the SVX. Anything we can do for the back?
If you did make an adapter kit, what sort of cost would we be looking at?