The owner of this fifth generation Cadillac DeVille coupe originally had a built Cadillac motor power it but after a wanted to go faster so he turned to the LSx. Under the hood now sits a 6.0 L LSx that runs on methanol and produces around 600 horsepower. The block has 400,000 miles on it and still running strong. The rest of the drivetrain consists of a Turbo 400 transmission and Ford 9″ rear end. The best quarter-mile (in the video) was 10.890 at 122.70 mph.
Source: BigKleib34 Youtube channel