You don't need a rear sway bar in the CRX. It's already tail happy to begin with. But it all depends on what class you want to be in or what mods you have done already. But my thinking about novices just starting out ot autocross is just drive the car as is for about 20 events.

The car is probably more than you can handle already as it sits. You have to catch up to the car and drive it 10/10ths. Most novices will drive their car 5/10ths or 11/10ths. Both are slow.

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