whoever said Forged and Hypereutectic was probably right, read here...
4032 being high silicon probably qualifies it as Hypereutectic alloy, the 2618 probably Hypoeutectic
forged construction, better than cast... best of both worlds?
depends upon the application
but a 4.30 rear gear sounds like a lot, with a 26" tire you'll tach 6k at 108 mph
there'll be phantoms, there'll be fires on the road... and the white man dancing