What makes this extreme? How 'bout a 500 horsepower LSX-427 V8? A new release from Pontiac, the G8 will be taking the place of the GTO. This custom came from the mind of rapper 50-cent. Some notable additions to the G8 were red leather inserts to the solid black seats and a grade A 800-watt sound system from JBL. The G8 will be available to buy in early 2008.