GT500 has such high gearing it even avoids the gas guzzler tax. There are ways of doing things... Chevy has yet to figure it out. I seriously don't see why any American car makers aren't putting turbos on their big players instead of superchargers. We know superchargers have a ton of parasitic drag, sure turbos have a bit of lag, but Ford got around it using two different sized turbos on their 3.5l Ecoboost models.