geeze! I'm surprised a diff and one extra gear are worth 200lbs in such a light car. I must race at more of a mechanical disadvantage than I though. This is an expensive game to play. It seems to me that the best way to play"maximizing fun and minimizing costs" is if you have enough of a field for a number of midpack cars to race with. The pointy end of the grid is just a darn expensive place to be.