I've seen A LOT of posts about making HP with a 318-So why is it so ???

I am building a 318 for my Australian 1980 CM Valiant Regal Special Edition Sedan.Why 318? Because car is getting restored to original and has Brazilian 318 with 727 torqueflite. I am using my edelbrock alloy heads that are on my charger as the charger is getting an upgrade and I will use all the old parts that I already have. So hear goes, 40thou over 318, mill the block to get comp up to near 10 to 1, heads have home port job with 2.05 inlet valves, cam will be hydraulic 204/214 @ 50 thou with 421/441 lift. Exctractors and dual 2.5 inch system, Wieand action plus manifold with 650 edelbrock carb. Should make decent power for a mild 318 in this cruiser. Just using up all my old parts off of my charger.These cars originally had ELB and cold air intake, so will be trying to make it look as close as possible to standard looking.