Great...I have an 08 with 48k on it...I know its a little too soon to replace plugs and mine runs perfect,but will I possibly benefit from doing it earlier and what is the production dates or series that I can use to determine if I may or may not have a problem without having to look at the boots???...What plugs are being recommended to avoid future issues???....Do these engines also have the plug blowout problems that the earlier ones did???..