I would like to take a moment to add, that if a turn marshal has to tend to you even one time during a race, the time that you spend on your roof, or stuck with your nose against the barrier, is a greater loss than the differrence between all of these kits. So if you end up needing the services of a turn marshall during regular races, by any fault of your own, then you should delay the purchase of a new kit until it will make a differrence.