Yes your right. We use stock 240sx rotors, calipers, and a custom adapter bracket made in house. I still have the CAD file save if anyone is thinking about doing the same setup. The 240sx rotor will have to be bore out in the center to accommodate the 411 original hubs and notching the stock 411 upper control arm because the brake caliper will hit.
Yes you are correct. We thought about this long hard and should have told the customer to go with an sr20det but people have already done this and even a ls1 engine. Who want to see another similar swaps....not us.
So we decided to chop the front chassis off and build a new one from scratch using all the 240sx suspension.