The only thing I would add in is that when the grinding comes to the wall dividers, I would not take any divider away. If I could add more of a wall divider via the grinding away of the intake, I would do that with rounded edges of the wall dividers.
Conturing the roof of the intakes runners is a slow slope upwards to meet the vertical portion of the intake. How high up is good, IDK. I’m not sure of what is in my head is good or bad. So at this point, I would be searching pictures on the web of what the “Pro’s” did.
Also, food for thought, look at other race intakes for other makes and see how there casting are and find pictures of those ported.
