The GTS-t Type M has different brakes to the regular GTS-t and the GTS, hence different pads. It depends on whether your car has the larger Type M brake calipers dude. If it does, they will not fit.
And as a general note, as far as imports go, assume retailers (Repco/Supercheap/Bursons/etc.) have no idea until proven otherwise. I love the stores but I always go armed with part numbers.