1967-69 OEM A-Body 383BB LH Engine Bracket

Ok so here are pictures of the left hand poly mount for a factory A-Body BB car. I have a factory BB car with a Schumacher left hand mount that is not compatible with the poly mount. I think I wound require the factory LH motor mount bracket. I have pictures of the mounting bracket. Know I need to figure out the hole locations to drill out the Schumacher mount.

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