That's a good idea, except your not supposed to have a 4-5 point harness without a roll bar. In a roll over you can't move. Ultimately it's up to you. I would never put any type of roll bar in a car meant for the family. They become two seaters once that roll bar goes in the car. You can go pretty damn fast with a 3 point seat belt. Look at the ZR1. I've autocrossed at a very competitive pace and road raced once and didn't feel they were a neccessity. They would be nice in a road race at the highest levels with these cars.You need a good set of supportive seats however.
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Todd
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