MP Dizzy?

Looking through my pile of random parts I might have found a MP small block dizzy. Tag says 3690431. It appears to be a "left hand unit" which is confusing to me but hey, what isn't these days.

Looking at the governor plate and measuring for "good measure", it has a total mech adv of 24 deg. Looks like someone already futzed with the springs, only one inside...

Anything special? Thinking of using this instead of the other one with 30 deg total we have.

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