Just something to be aware of is that landcruz calipers are so darn heavy
so Id be more inclined to use another caliper thats lighter.
Most brakes larger than 1200 ones are a good starting point but if your
brother needs bigger he best use Mazda rx7 s4/5 alloy calipers on the
Hyundai (vented?) rotors or sylvia rotors. The weight of the landcruz calis
are quite a drag on such a simple and light front end.