Why? It's just a 73+ disk brake set up. Dr diff sells the same parts for less money. Like, several hundred dollars less for the same parts.
And their "5x4" bolt pattern set up is just 73+ rotors drilled with a 5x4" pattern. Which means, it still widens the track width and the center register is larger and won't fit stock SBP wheels. So you'd still need new wheels unless you already have aftermarket SBP rims that happen to work.
