Need Help Quick. 400 stroker build or 440?

either one of these combos is going to take one hell of a cooling system to stay cool on the street. i think the 451 is a nice combo that in your car could go into the 9's easily. my dads 451 has box stock eddy rpm heads with a mild solid mech. cam. car goes 10.70s in a full street trim demon weighing 3300lbs. a well built 451 with 440-1 heads and a good solid roller is gonna be knocking on the 600hp door easily. that and with the 512 and 540 kits dont you have to go external oiling?