Yes, completely stock engine and exhaust. Only some brake cooling and better brake fluid and pads. Even the stock tires. I’m glad you are enjoying the vids! A few more to come and then back to some how-to vids!
Don’t listen to FollowMyLine17, he’s got a full cam AND a whipple, it’s just a quiet one, on Hoosiers. Oh and Nitrous. No other explanation on why he is a rocket on track.