It was insane, we were right behind two ford/mercury concept cars and behind us was a factory lightweight 61 galaxy race car with open headers, to further that we started next to a real thunderbolt (Phill Bonners) and behind his was another thunderbolt clone. The track was amazing though and it was fun going through the banking on the track> In the end we overheated because they were taking individual pics of everyones car so we were at around 230 degrees but we just put a bigger fan on after that to cool it down. As for the 5.4 liter deal likely not because the 5.0 liter is lighter so that works better for me. The car as of now is in the 3400-3500lb range which isnt bad for a pillarless car.