Testing The 750-Hp Mercury Racing Sb4 7.0 Small Block

What's it like to drive a lightweight Ultima GTR, powered by a 750-hp Mercury Racing 7.0-liter DOHC SB47.0 crate engine? Let's find out. With Will Sabel Courtney.
Shot by Andrew Siceloff, edited by Erica Lourd, and produced by Cait Knoll and Mik

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