B engine alternator bracket........

BIG BLOCK MOPAR"BLACK"ALTERNATOR BRACKET 383 440 DODGE CHRYSLER bb mopar #6097BK | eBay. I'm trying to verify this will work with the 383/400 engine. I contacted the seller and he said it only fits the B engine. The listing also includes the distance for the mounting hole centerline that I posted previously. I'm just trying to verify so I don't waste time getting something I can't use. I don't have the engine accessible so I won't be able to check it either for a while.