I'm currently building a Class 8 extended cab truck. I've been looking for a brake system for the front of my truck. I haven't built the front suspension yet, so I'm able to run any (front)disc setup (so far) My question is I've seen other class 8's run 15" wheels with a 4 piston setup with these CNC calipers. I wanted to know how to contact or find a distributor and could set me up with these. Oh a 15" wheel is the biggest i can go. It's a budget truck. I can't afford 17" wheels.