An Opel Commodore B (The Generation After That Was The Donor Car For The Brazilian Chevrolet Opala, But The Generation Before That Was The Donor Car For The Australasian Holden Commodore) That Has Been Modified Into A Race Car, And Has Been Repowered With A Modified And Souped Up Iteration Of The Chevrolet 366 Cubic Inch Big Block Medium-Duty Truck Engine:

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The Chevrolet 366 cubic inch Big Block V8 Engine is what is referred to as a Tall Block, along with the 427 cubic inch Big (and Tall) Block Medium-Duty Truck Engine.