Martin Truex Jr. #8 Crown Royal 2006 Firebird IROC Xtreme Motorsports Authentics 1:24 Scale Serial Number: 636 of 1404 P/N: 111984. This car was powered by a 500 horsepower, 358-cubic-inch Chevrolet V8 engine.  When car was purchased it was removed from packaging and placed in a dust proof acrylic case in a smoke free environment, and remained there until it was replaced in the original packaging.