360 vs 408

FWIW I'll be disappointed if my engine makes less than 450 HP at the crank (based on trap speeds not a dyno) and I'm running a bone-stock 5.9L Magnum bottom end, I put in new rod bearings and the special main cap bolts for a windage tray but didn't touch anything else. I've got ported Eddy RPM heads, port-matched RPM intake and a custom-grind Racer Brown cam, 222/226* at .050" with .544/.548" lift hydraulic roller.