Performer or Street Dominator with TQ?

Even though it is a 440 it is in a real heavy car with airplane gears so you need to keep as much low end torque as possible. That said I'd probably go with a street dominator. Nice middle of the road manifold. It's a single plane but doesn't have huge runners or plenum so it's still got decent torque yet real good top end power. Much better top end than a performer has and it doesn't give up much low end torque. JMHO