It's horse in the Porsche and bricks in the box

from Lupe Fiasco – Failure Lyrics on Rap Genius

Meaning

“Horse in the Porsche” refers to the horsepower of the car, the “bricks in the box” allude to the aforementioned “horse,” slang for heroin, bricks of which are the stash box of the car.

Bricks in the “Box” is a way of saying he’s got cocaine in his Boxter Porsche.

I thought he was all about Carerras?

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