The motor was dyno'd with headers after it was built (on an engine dyno) and it turned 402 HP and 502 lbft of torque with an Edelbrock 850 Qjet. It has the 800 AVS and Ram Air LB manifolds now. I'd like to see the same or better. After the carb change, I now have the "seat of the pants" feel I've been wanting, but I know its running very rich. The cam is pretty mild, so we'll see. I wasn't there when the engine shop dyno'd the engine when it was built so all I have are the run sheets, but now "tuning knowledge". Who knows. If I can pull 400 HP at the rear wheels, I should be happy....but more is always better.