Well for the 5th gen, where it bolts to the firewall there is a large flat surface long enough for the 4 bolts. On my 4gen that we tried to mount his bar there is only a small area abuot 2 inches and then it curves back. So i think the plans are to first see how the 5gen sells and how people like it compared to DC and Neuspeed bar, and then fabricate a different mounting bracket to the firewall and such.