The 4.30s will work but get the tires to at least 28 inches tall. I have run 4.30s at the track but you will need a cam that will power you to at least 5800-6000. The 4.10 s maybe just right for a more dual purpose car. With 29.5 tires I drive my car now with 4.56s to tracks and back in some cases 80 miles one way