+1 for Mars
get used to how your car handles first out there, have some fun
then if you keep going check out the rule book to see where your car sits and where the mods would take you
then just flow with your progression . for me i've been building it step by step
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if you can only race me in a straight line then whats the point 
...91 SMF SCCA
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by http://www.flickr.com/people/8341770@N07/, on Flickr
I see people out there spending money on the car to improve it … If you spend half that effort just working on your driving skills, making you and the car work together as a team, then you’ll go faster – period. To make the car go a second faster on the track takes a lot more energy and money than making yourself drive it one second faster.
– the late Tom Thrash SCCA Solo E Production