After an exhaust upgrade and tune, John Hennessey’s personal McLaren 600LT was putting down 658 RWHP- right in the neighborhood of stock McLaren 720S numbers. How do the two compare now? Contact us for more information on our McLaren performance upgrades: 979-885-1300 | http://www.HennesseyPerformance.com

See the stock vs stock comparison of these two vehicles: https://www.youtube.com/watch?v=7qs9r…

Special thanks to Chris and Freedom Supercars for bringing out the 720S. Check them out here: https://www.freedomsupercars.com/