Ok, guys. I looked at the info from the purchase of this car and it said it had... Dart Sportsman Heads and Hydraulic Roller Cam. From the engine, I can see it has Hedman headers. The valve covers are Edlebrock and the intake manifold is Edlebrock Can you tell me what the sportsman heads and hydraulic roller cam means? What that does for the performance? Also, the info from the purchase said the motor was tuned to 400hp. Appreciate your feedback as I get familiar with this car.