"traction bars" on front wheel drives should be called something else. They actually take the slop out of lower control arms, etc. more than increase traction.

I think it's more important to measure
how the ride height changes as the car rises off the line,............

and then adjust the suspension to keep the tires flat on the pavement for maximum grip..........

This will not be the same setup for a spirited drive through the turns, so remember how to swap it back when you leave the track.