450-500HP 360?

Here is a 477 horse 318
Iron-Headed Mopar 318 Magnum Engine- Popular Hot Rodding Magazine

nothing magical about making a 450-500 horse 360
One I took out of my Dart last season qualifies.
Bone stock 360 shortblock
Eddie heads with minor port work
Air gap
950( 750 would work)
Headers
Good camshaft( mine was 260/264 565/565 lift)
Ran almost 119 at 3330 pounds, shifting at 6200-6300