
Most of the other GNs retained their original turbo V6s, though a couple had Chevy crate V8s installed.

To get the engine tucked under the trunk lid, however, the turbocharger and its plumbing had to be removed. The most unusual of the seven GNs built was one with the body mounted backward on the frame so it could be driven at speed while appearing to be going backward.The production team built 8 of these cars, and installed CNC slide brakes and Wilwood calipers in the rear to help facilitate stunt demands.Despite often being referred to as a Grand National GNX, the car in the film is not the GNX trim rather, it is merely the Grand National.Some the cars used for stunts were built-up Buick Regals designed to look like the Grand National.Dom revs the engine and drives precisely under the flaming tank as it rolls over the Buick's head, and Dom and Letty watch as the tank hits the tanker, exploding and falling off the cliff. Dom reverses to avoid being hit by the flaming and rolling oil tank, but he reaches the end of a cliff with the road itself being blocked by the fallen tanker. He then has Letty jump onto the car and get into the passenger seat, however, one of the oil tanks come loose and explodes. Because Tego Leo and Rico Santos cannot unhook themselves from the containers and are being dragged with the fuel tanker, Dom has Letty spray the hitch with nitrogen again and rams the car in between, separating the containers.

However, when the driver sees Letty on top of the tank, he starts swerving to knock her down, even ramming into the Buick and shooting at it. She then uses a nitrogen spray gun and a hammer to unhook two of the tanks while Dominic drives the Buick in front of the tanker to slow it down. Dominic drives up beside the fuel tanker, while Letty jumps onto the tanker. Dominic Toretto uses this car while hijacking fuel tankers in the Dominican Republic.
