Does anyone know what this casting #. came out of in 67' its for a LH side

Didn't see that exact number but did find 3914613 = 1968-70 LH 396/427 265-425 hp.

Don't see that # either .... here's what I have on drdaves's #:

Number: Side: Year: Model: CID: HP: Outlet:
3914613 LH 1968 Passenger 396 325 2.526
3914613 LH 1968 Passenger 427 390 2.526
3914613 LH 1969 Passenger 396 265 2.526
3914613 LH 1969 Passenger 427 335 2.526
3914613 LH 1968 Passenger 427 425 2.526
3914613 LH 1969 Passenger 427 390 2.526
3914613 LH 1969 Passenger 427 425 2.526

thanks guys thats what I thought. the person selling it must have made a mistake