Just curious, is it the engine or body style or a combination of both? For example (assuming everything fit) if I were to swap out the engine/transmission of a C63 AMG, and drop it into a CLK 500, would the CLK be considered a CLK 63 AMG or a C63 AMG or would it still be a CLK 500? I'm not assuming anything, I was just curious. Thanks guys.

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1990 190E 3.0L