To be complety honest that 3" elbow with the couplers on it sure looks cool as hell...But I have since put the factory black plastic stuff back on and simply made a plug for the big opening that I no longer need. I did this to paint the steel one but I cant really tell much of a performance difference if any. I think the intake restriction is in the 6 individual runners in the large aluminum upper manifold. I think this mainly because when I was port matching everything I had to remove a significant amount of material from the upper ports but the lower ports needed very little removed.

Look at the amount of material I removed to get the gasket to match up on the left compared to the uncut right side..

Now look at the uncut lower intake. I marked it to be cut but havent removed anything from it.


You can see how little actually needs to be removed from the lower compared to the pics of the upper. Once I cut into my extra manifold we will actually see where the restriction is I think.