David did not have alot of confidence in the mods done to his 06' GTO before he bought it. To put some confidence back into his ride he decided to have us install one of GM's latest crate engines. The power plant of choice was the 525hp LS3 engine! This engine along with his full accoutrement of bolt-ons should really make for an excellent package for years to come. Oh and did I mention it comes with a 2yr/50,000 mile warranty from GM. Horsepower with a warranty it does not get better.