This RX7 is a LS1 with an auto and twinturbos. He is a great guy and only lives a few hours from me....I'm very sorry he wrecked, but glad he was ok. In TnT last week it was going mid nines on the new setup. He had battery charging problems on the drive and couldn't start for the race. This was a TnT after the other cars got finished. I belive it was a fluid problem. Always be gentle on the brakes after a hard pass or when you have a breakage.