What is the difference between the Mace CPR6 manifold and the Octane Alley manifold? Is there a power difference?

Cpr6 manifold Our revolutionary CPR6 V6 Commodore manifolds extract the best out of your Holden V6 alloy tech four-valve engine, without the need for a thirsty V8. Our most recent dyno d engine produced 422 bhp. We can work on just your alloy tech manifolds to increase power, but we can go as far as you'd like to gain maximum power such as fitting Motec. Octane Alley,s Manifold While the standard Holden VZ/VE inlet manifold design has good torque.