The only hub I have has no snout. The crank trigger is for the MSD 12lt mag.
Missing somthing here--- "snout" is the end of the crank, "hubs" have pulley registers, "girdles" support the crank and pulley under load while using a blower on a SBC because the crank snout does not stick out far enough and puts a load on the hub,streching the 7/16 crank bolt, losening up the hub,causing the hub to flex and crack along the 1/4" keyway,rolling the key out of the crank and really messing up the crank seal, pukeing out oil all over the front of the engine and on the track.
By going with the ATI hub or shrinking material over a standard SBC blower hub, you eliminate the hub itself flexing and will not crack along the keyway. But even with the girdle I have seen the standard blower hubs split apart and do the same amount of damage.