I don't know if any of you have a dealership in your area that does this but Gwatney Chevrolet is working with MAST Motorsports to install performance upgrades to factory vehicles that will retain the MFG warranty. You can get H/C/I Stroker etc put on your vehicle and financed into the price. I know Toyota has had a deal for many years where you could supercharge their vehicles from the factory but nothing like this has been around since the '70s that I am aware of.