Cammotion was made aware of engine size (400 with 0.03 overbore and 10.5 cr) Dearborn 3 speed and 3.55 rear. I live in central Ontario Canada. There's too much traffic for standard steering and 4 wheel drums for any fun on the 401 so she's rarely on the highway, but we do make 3hr runs to cottage country on 2 lane roads. So knowing this they have hopefully built me the optimum cam. As I said before, will definitely report to the forum how the new cam feels and performs. Maybe as early as next week.