I have the opportunity to buy a Rage 2004 jr Nitro Champ for my 9 year old. It was always raced on an asphalt oval and looks almost brand new. Is a 2004 chassis still good or have there been updates that would make it less desirable? It is $1000 race ready other than need dirt tires. Haven't been raced in 10 years but starts right up. He is moving out of a baby champ. Anything I should be aware of?